My search turned up a few articles about the subject. Perhaps the fellow who wrote the wiki piece had his own opinion. The point is, it was a theory, it's was reasonably well reported, and it was apparently wrong.
1970 Colder Winters Held Dawn of New Ice Age Scientists See Ice Age In the Future (The Washington Post, January 11, 1970)
1970 Is Mankind Manufacturing a New Ice Age for Itself? (L.A. Times, January 15, 1970)
1970 New Ice Age May Descend On Man (Sumter Daily Item, January 26, 1970)
1970 Pollution Prospect A Chilling One (Owosso Argus-Press, January 26, 1970)
1970 Pollutions 2-way Freeze On Society (Middlesboro Daily News, January 28, 1970)
1970 Cold Facts About Pollution (The Southeast Missourian, January 29, 1970)
1970 Pollution Could Cause Ice Age, Agency Reports (St. Petersburg Times, March 4, 1970)
1970 Pollution Called Ice Age Threat (St. Petersburg Times, June 26, 1970)
1970 Dirt Will .Bring New Ice Age (The Sydney Morning Herald, October 19, 1970)
1971 Ice Age Refugee Dies Underground (The Montreal Gazette, Febuary 17, 1971)
1971 U.S. Scientist Sees New Ice Age Coming (The Washington Post, July 9, 1971)
1971 Ice Age Around the Corner (Chicago Tribune, July 10, 1971)
1971 New Ice Age Coming Its Already Getting Colder (L.A. Times, October 24, 1971)
1971 Another Ice Age? Pollution Blocking Sunlight (The Day, November 1, 1971)
1971 Air Pollution Could Bring An Ice Age (Harlan Daily Enterprise, November 4, 1971)
1972 Air pollution may cause ice age (Free-Lance Star, February 3, 1972)
1972 Scientist Says New ice Age Coming (The Ledger, February 13, 1972)
1972 Scientist predicts new ice age (Free-Lance Star, September 11, 1972)
1972 British expert on Climate Change says Says New Ice Age Creeping Over Northern Hemisphere (Lewiston Evening Journal, September 11, 1972)
1972 Climate Seen Cooling For Return Of Ice Age (Portsmouth Times, ‎September 11, 1972‎

1972 New Ice Age Slipping Over North (Press-Courier, September 11, 1972)
1972 Ice Age Begins A New Assault In North (The Age, September 12, 1972)
1972 Weather To Get Colder (Montreal Gazette, ‎September 12, 1972‎

1972 British climate expert predicts new Ice Age (The Christian Science Monitor, September 23, 1972)
1972 Scientist Sees Chilling Signs of New Ice Age (L.A. Times, September 24, 1972)
1972 Science: Another Ice Age? (Time Magazine, November 13, 1972)
1973 The Ice Age Cometh (The Saturday Review, March 24, 1973)
1973 Weather-watchers think another ice age may be on the way (The Christian Science Monitor, December 11, 1973)
1974 New evidence indicates ice age here (Eugene Register-Guard, May 29, 1974)
1974 Another Ice Age? (Time Magazine, June 24, 1974)
1974 2 Scientists Think Little Ice Age Near (The Hartford Courant, August 11, 1974)
1974 Ice Age, worse food crisis seen (The Chicago Tribune, October 30, 1974)
1974 Believes Pollution Could Bring On Ice Age (Ludington Daily News, December 4, 1974)
1974 Pollution Could Spur Ice Age, Nasa Says (Beaver Country Times, ‎December 4, 1974‎

1974 Air Pollution May Trigger Ice Age, Scientists Feel (The Telegraph, ‎December 5, 1974‎

1974 More Air Pollution Could Trigger Ice Age Disaster (Daily Sentinel ‎December 5, 1974‎

1974 Scientists Fear Smog Could Cause Ice Age (Milwaukee Journal, December 5, 1974)
1975 Climate Changes Called Ominous (The New York Times, January 19, 1975)
1975 Climate Change: Chilling Possibilities (Science News, March 1, 1975)
1975 B-r-r-r-r: New Ice Age on way soon? (The Chicago Tribune, March 2, 1975)
1975 Cooling Trends Arouse Fear That New Ice Age Coming (Eugene Register-Guard, ‎March 2, 1975‎

1975 Is Another Ice Age Due? Arctic Ice Expands In Last Decade (Youngstown Vindicator ‎March 2, 1975‎

1975 Is Earth Headed For Another Ice Age? (Reading Eagle, March 2, 1975)
1975 New Ice Age Dawning? Significant Shift In Climate Seen (Times Daily, ‎March 2, 1975‎

1975 Theres Troublesome Weather Ahead (Tri City Herald, ‎March 2, 1975‎

1975 Is Earth Doomed To Live Through Another Ice Age? (The Robesonian, ‎March 3, 1975‎

1975 The Ice Age cometh: the system that controls our climate (The Chicago Tribune, April 13, 1975)
1975 The Cooling World (Newsweek, April 28, 1975)
1975 Scientists Ask Why World Climate Is Changing; Major Cooling May Be Ahead (PDF) (The New York Times, May 21, 1975)
1975 In the Grip of a New Ice Age? (International Wildlife, July-August, 1975)
1975 Oil Spill Could Cause New Ice Age (Milwaukee Journal, December 11, 1975)
1976 The Cooling: Has the Next Ice Age Already Begun? [Book] (Lowell Ponte, 1976)
1977 Blizzard What Happens if it Doesnt Stop? [Book] (George Stone, 1977)
1977 The Weather Conspiracy: The Coming of the New Ice Age [Book] (The Impact Team, 1977)
1976 Worrisome CIA Report; Even U.S. Farms May be Hit by Cooling Trend (U.S. News & World Report, May 31, 1976)
1977 The Big Freeze (Time Magazine, January 31, 1977)
1977 We Will Freeze in the Dark (Capital Cities Communications Documentary, Host: Nancy Dickerson, April 12, 1977)
1978 The New Ice Age [Book] (Henry Gilfond, 1978)
1978 Little Ice Age: Severe winters and cool summers ahead (Calgary Herald, January 10, 1978)
1978 Winters Will Get Colder, were Entering Little Ice Age (Ellensburg Daily Record, January 10, 1978)
1978 Geologist Says Winters Getting Colder (Middlesboro Daily News, January 16, 1978)
1978 Its Going To Get Colder (Boca Raton News, ‎January 17, 1978‎

1978 Believe new ice age is coming (The Bryan Times, March 31, 1978)
1978 The Coming Ice Age (In Search Of TV Show, Season 2, Episode 23, Host: Leonard Nimoy, May 1978)
1978 An Ice Age Is Coming Weather Expert Fears (Milwaukee Sentinel, November 17, 1978)
1979 A Choice of Catastrophes The Disasters That Threaten Our World [Book] (Isaac Asimov, 1979)
1979 Get Ready to Freeze (Spokane Daily Chronicle, October 12, 1979)
1979 New ice age almost upon us?