Seinfeld? I've never liked his act. Ever. The show was funny, but it hasn't held up for me. OTOH, apparently he's talking here about Bobcat Goldthwait, who is and always has been a no-talent hack, with as Seinfeld notes (in different words), a stupid affectation in his voice.
Jerry Seinfeld tells Bridget Everett that he can't stand one particular comedian. The name is censored out, but it appears to be Bobcat Goldthwait. He really REALLY doesn't like this guy...The Comedian That Jerry Seinfeld Really REALLY Dislikes - "Comedians in Cars Getting Coffee" | oct 16, 2021 | rschreck
https://www.baltimoresun.com/news/bs-xpm-2003-07-23-0307230087-story.html
https://www.flavorwire.com/531542/in-praise-of-comedians-who-dont-buy-into-the-pc-panic