Why Did Larry David Leave ‘Seinfeld’? — Details

After every taping, “He’d go [in a Larry David voice], ‘It can’t be done again! That’s it! It can’t be done!” Jason told Marc. Rumor has it that there was a running joke on set that Larry would threaten to quit after every season and Jerry would have to talk him back into staying.

Although Larry left the day-to-day running of the show after Season 7, he continued to be the voice of George’s boss, the fictionalized George Steinbrenner, through the end of the series. Larry also returned to Seinfeld to help write Season 9’s two-part finale.

Source: https://www.distractify.com/p/why-did-larry-david-leave-seinfeld