Why is ageism socially acceptable?

[RINO Tom]

Hot take ... ageism toward younger people should be 1,000 times more acceptable than ageism toward older people.  The latter is completely tasteless and void of class.

[RINO Tom]

I just want to be clear that I think ALL ageism is classless and condemnable.  I just think that treating a young person who acts like they know more than they do negatively because of it is WAY more understandable than treating someone from an older generation poorly because they, say, maintain some attitudes or habits that were once the norm.  We're all going to be out of touch oldies someday.