probably not, its been known for about half a decade that he's a piece of shit. having said that i think its more of studios realizing they have grown beyond his abilities. he can still make money on indies but they won't let him helm a huge project anymore. the cracks were apparent back in Age of Ultron, and his output has slowed a lot, lots of his projects haven't been greenlit like they used to be. his new show he just left was the biggest thing he's done in 5 years, besides Justice League. i don't know how much input he had on Agents of SHIELD but you would think with every media company launching a streaming service he could have got more than one project signed and shot in the last 5 years. It seems like literally no one has returned his calls, even pre-justice league. This isn't James Gunn, where he has a new job before he finishes his commute home from his last one. Joss is too old and outdated, whatever fans he had have moved on, and he never adapted his style. For fucks sake that tv show he worked on sounds like it should have aired on the WB in 2001 not HBO in 2021.
I personally know of an anti-gun doc he tried getting off the ground that never got anywhere back in 2018. it was already shot and edited, that should tell you how persona non grata he is. he can't even get fucking reddit+ to buy a documentary about how evil guns are. at this point he's better off living on his residuals.