https://screenrant.com/mash-show-aged-poorly-timeless/

Tons of old TV shows have aged poorly (https://www.reddit.com/r/mash/comments/qxdf20/mash_has_aged_poorly_in_some_regards/) in certain contexts, and, while M*A*S*H* will always be a classic, it's also got a few flaws and flubs.

Sounds like a bunch of whining to me. They're complaining about how outdated the '70s were, but the authors do realize the show was set in the early '50s? That said, there were a few legitimate complaints.