Can you get a platinum album and a #1 single that way too? Just grow up, you said something stupid and got smacked. Fleetwood Mac was a VERY successful blues rock band before they went bubblegum pop which is where you began noticing them. For some serious music fans the Buckingham-Nicks era marked the end of Fleetwood Mac as a serious band, not as their beginning.
bare trees didn't go gold until 1976 (4 years after release and a year after buckingham and nicks joined) and platinum until 1988 (so, more than a decade later)
compare that to
fleetwood mac, the first album with buckingham and nicks, which went gold in its year of release, 1975 (so, before
bare trees). or, you know,
rumours which went gold 2 weeks after release and platinum just a month after release in 1977. it was 12x platinum before
bare trees hit platinum.
so, no, fleetwood mac did not have a platinum album before buckingham and nicks, and didn't even have a gold until buckingham and nicks. (
future games didn't go gold until 2000, and
mystery to me didn't go gold until the end of 1976).