I would strongly suggest you read the academic literature on the difference between modest, sustained inflation and modest, sustained deflation. They are not remotely similar.
And no, it's pretty much universally agreed that deflation is bad. The only people who even try to dispute that are Austrian economics, but that's not a school of economics that's taken seriously. (it being scared of math and all) Additionally, whether a period of inflation or deflation is good or bad is not dependent on whether or not it is market driven. What matters is its effects on the economy. ie: it's the outcome that matters, not the source.
I would strongly suggest you familiarize yourself with the argumentative fallacy called fallacy of authority and fallacy of ad populum. You cannot prove an argument correct with the premise that most people believe in it, nor can you do so by the fact that most schools of economic thought believe it.
I would also strongly suggest you read market monetarist literature, because market monetarists recognize that modest gradual price deflation founded on modest gradual productivity growth is not a bad thing, and that fears over price deflation regardless of the causes, is an unfounded irrational fear. Most schools of economic thought are actually wrong about price deflation. Most have come to believe that because falling prices has been temporally correlated with depressions and recessions, that all price declines are bad. Economists who understand economics better have explained in great detail that productivity based price deflation does not increase unemployment nor does it put any downward pressure on profitability.
To your point about gradually falling prices leading to “delays in consuming”…
Yes, a gradual price deflation of say 2% might very well lead to consumers “delaying” their consumer spending. But you have to expand your range of cognition. Things don’t stop there. You have to keep asking and probing. Suppose people did delay their consumer spending. Can they keep delaying and delaying forever? Clearly not. But because people don’t all have same frequency of making consumer expenditures all on the same days and weeks, it is not like there will be a period of no spending at all anywhere, and then spending, leading to bankruptcies in the interim.
No, what happens when there is gradual price deflation is that people might end up holding a slightly higher cash balance, say 10% more, relative to the value of their accumulated assets. Once that new cash preference tendency levels out (ceteris paribus), then there is no more reason or need or incentive to keep increasing cash balances ad infinitum.
To my other point, just like gradual price inflation does not lead to continually falling cash balances as infinitum, neither would gradual price deflation lead to continually rising cash balances.
There is no destructive effects on economic activity when prices fall because of productivity growth. We see this in electronics. Prices gradually fall over time, because the rate of productivity growth is so high that not even central banks targeting price level inflation of 2% can overcome that productivity growth. So we see prices falling. But are people forever “delaying” their electronics purchases? Certainly not! In fact, have you seen the lineups for new electronic gizmos like iPhones and such? Prices keep falling for all kinds of electronics, and yet people bite the bullet and would rather have the goods NOW at the higher price relative to LATER when the prices are even lower.
It's been explained to you the concept of time preference, which is the main principle underlying why people spend in the present even if they believe prices will fall next year. Yet you scoffed at it very pretentiously. You clearly don’t have a very sophisticated understanding of economics. You falsely believe that to become enlightened in economics is to merely follow the crowds, the mainstream. That is what makes people like me more intelligent than you. We don’t conflate following the crowds with the pinnacle of economic knowledge. We know that the mainstream fears price deflation because the theory is incapable of distinguishing between good price deflation caused by productivity growth, which does not occur in the aggregate in our inflationary society, with bad price deflation caused by monetary deflation which has historically, empirically, visually been correlated with depressions in our central banking society.
The mainstream tries to copy physicists, and because of that, lacks sufficient means to use counter-factual analysis.
I should stop recommending any more literature to you however, because you appear to not be the type that “wastes his time” spending valuable brain cells on anything but how to stay with the popular beliefs of the time, in order to gain the approval he was taught can only be had by believing what is popular.