say it hasn't been good for years, also haven't watched it in years. Or they watch one episode, and it's a dud, so they write it off as all bad now.

The main difference between now and the golden years of The Simpsons is that during the golden years, it was always funny. No dud episodes. It's more hit-or-miss now. Some episodes are duds. But when it hits, it's still really funny.