Wentz's 2019 season is probably what he is now: above average in raw talent but flawed ... injury prone, frustrating as hell because he plays himself into sacks and turnovers by having poor pocket awareness. I don't think he's a very bright guy.
For the Eagles, 2021 was going to be a nightmare anyway because they were already in cap hell ($70 million over the cap coming into the offseason), so with the uncertainty around Wentz and a lost season coming up anyway, it made sense to cut bait now and take their medicine on all their financial woes. They're gonna have to make a bunch of trades and cut some guys. Jeffery and Jackson are the easy ones. They'll have to trade Ertz, and possibly Lane Johnson. Kelce might retire, Peters almost certainly will. Malik Jackson will be gone. They could trade Fletcher Cox or Brandon Graham. There's a lot that has to happen to get under the number, and they won't be free agent players due to their cap woes.
I'd be more optimistic with good draft picks coming in 2021 and 2022 (since they'll be fucking terrible this season) if they weren't running it back with the same front office that got them here in the first place. Howie Roseman and Jeffrey Lurie are terrible at the draft. JJ Arcega-Whiteside over DK Metcalf and Jalen Reagor over Justin Jefferson in back-to-back years has driven me insane. It's not hindsight telling us that they were bad picks; they were bad picks the moment they happened. Every Eagles fan I know wanted Jefferson there.