I'm an Xer and I didn't like Seinfeld, but that's mostly because I don't like embarrassment comedy. It's the same reason I don't like Will Ferrel and Ben Stiller, but to each their own. I don't begrudge anyone else finding it funny, it's just not my vibe.
I'm not saying you have to like Seinfeld or anything, but I wouldn't consider it embarrassment comedy. It's more about the gang being a bunch of sociopaths, like an early version of IASIP.