It is not wrong to say it but it is wrong to compare it and complain about newer stuff. Just because your mind is not flexible enough to adjust for newer direction, doesn't mean it is bad.
I think people only have problem when these kids want to act like oldies and say "old is gold" just because they can't move on (same like other kpop fights). Stop complaining (I mean talk about old stuff all you want but do it without ridiculing new) and you'll see that no one is pressed.