Boomers are all bigoted, sexist, climate change denying pieces of shit?
... kinda a shitty take there mate. Lots of them are terrible, but so aye lots of people from other generations too, and tarring them all with the same brush is only going to alienate the good ones and make them quite reasonably dislike you.
The term boomer refers to a mentality, not to the generation anymore.
By the current use of the term, yes, they all are, as this use refers to people who refuse change out of irrational belief that old times were better, glorify a violent and fascist past, and deny the existence of modern science because they refuse to adapt their obsolete lifestyle.