"Gaudi" isn't the source of the term "gaudy". They likely both came from an earlier root meaning but gaudy was in place with the modern meaning before Gaudi was even born and many would probably disagree with the assumption his work could even be seen as the related to the term in the first place.

Incidentally, was Seinfeld ever funny?

I mean I just suspect the people who don't like Seinfeld probably still didn't like it when it was new, and "being done before" sure never was the problem for me.

Makes this trope feel a bit of a misnomer IMO