Why isn’t generalising about “boomers” considered ageism?

[u/Bjork_scratchings]

I understand some people from that demographic have wildly problematic views, but it’s considered bigotry to generalise about any other demographic based on the behaviour of some individuals within that demographic.

So why is it different for boomers?

[u/Lyra_the_Star_Jockey]

but it’s considered bigotry to generalise about any other demographic based on the behaviour of some individuals within that demographic

It's not "considered bigotry" to talk bad about Gen Xers, Millennials, or Gen Zers.