Comedy is necessarily of its time, and some of it wears better, some of it does not.
A feeling of nostalgia will carry vintage comedy over a lot of genuine detached analysis of how of its time it was, and is, but often, it serves as something of a social experiment, showing us what we found funny then, and which is less amusing now.
I have pointed out previously on threads like this, an unbelievable pointless series called "It Was Alright In The Seventies", where a series of vintage clips are shown to modern comedians not born at the time.
They are routinely aghast at the casual racism and sexism that formed the basis of comedy forty years ago, and why wouldn't they be?
It's as informative and revealing as showing a sociology class pictures of boys going up chimneys - and as about as funny and entertaining as well.
Humour dates, it's a fact, and not something you can hang thirty minutes of incredulity on, and pass it off as entertaining television.