The problem I see is that some elders feel that their personal opinions hold some kind of authoritative value over everyone else's in spite of their lack of substance or reasoning or connection with reality just because they were born further in the past.
In fact, the term "OK boomer" originated in elders systematically dismissing and criticizing other people's opinions based on their age. Thus it's quite ironic how that meme is criticized for the very same regrettablr pattern of behavior it criticizes.
https://en.wikipedia.org/wiki/OK_boomer
Being alive for longer doesn't correlate with wisdom or knowledge or insightfulness, and if you have a hard time presenting and defending your point of view with rational arguments and facts that you feel compelled to resort to absurd appeals to authority to force your views onto the world then your attitude itself is the problem.