You know, I think we're out of the era of Zombie Simpsons now. Since Season 30 it's no longer just shambling along as a husk of it's former self. It's now just bad and it's in your face about it.
The saddest part is that I think Al Jean himself was probably planning Season 32 to be the final season and figured they could autopilot their way through Seasons 30 and 31 and most of Season 32 and just put it all into some series finale that pulls a Dark Tower and the final scene shows the family leaving to see the school's Christmas program from the first episode.
I remember in the early-mid 2010's there was a lot of discussion about how Season 30 could be the last season and that Al Jean and the other producers would do an internal referendum about whether they should continue or not. Then at the last second before Season 30 premiered, they announced they renewed it for two more seasons (probably to give them more time to properly plan some kind of send-off) but then the Disney buyout happened.
Everything Disney touches pretty much goes to shit, and The Simpsons had already been in full Zombie mode since 2008 at the absolute latest. Bob Iger apparently had plans for The Simpsons since he made sure to spend the extra money to fast-track any contract or copyright procedures so The Simpsons would be available for Disney+ when it launched. He wouldn't even do that for the X-Men and Marvel is the powerhouse locomotive that's been pulling The Rat's gravy train.
The only reason why the X-Men cartoon was available on Disney+ at launch is because Disney owns the rights to it already thanks to the Fox Family buyout in 2001 (and the ABC Family brand launching the next year) since that deal also gave them the Fox Kids library and the distribution rights for Digimon and Power Rangers for most of the 2000's.
Iger had plans for The Simpsons and he's a megalomaniac who gleefully supports the mindset of intentionally alienating the fanbase.
My best guess for Disney making sure The Simpsons was all sorted out and good to go before any other Fox property is because having the classic episodes of The Simpsons available on a proper streaming service for the first time is a huge draw in and of itself, the kind of thing that can get people who otherwise wouldn't think of subscribing to Disney+ to sign up.
Iger will be out in 2021 and Corona has taken a bat to Disney's finances. If Bob Chapek has any sense at all on self-preservation, he'll probably do a full 180 on some of The Rat's more odious 2010's era policies to avoid being seen as Eisner 2.0.
Star Wars is pretty much done for as a brand unless they decide to officially declare the sequel trilogy non-canon and release the theatrical cuts of the Original Trilogy on Blu-Ray and Disney+ and Marvel is running on fumes at this point unless X-Men can give them a last-minute second wind before the MCU crashes and burns.
That leaves The Simpsons as the one brand that has fallen but could be redeemed if Chapek is smart and decides to do the most un-Disney thing out there: Give the fans what they actually want and end the show, but end it on as high of a note as you can get.
I've said this before, but what they should do is make Season 33 the official final season and do a segmented release for Disney+ where the episodes are uploaded once a week to help build up the finale. Have a big advertising blitz and try to hire as many of the old writers as possible for one last hurrah and fire Al Jean as the showrunner. Put Stark Raving Dad back in rotation or at least on a Blu-Ray box set series since the Finding Neverland controversy is pretty much over and done with. I'd even bring back Apu for the final season complete with Hank Azaria voicing him since the BLM controversies will likely be over with by 2021 for a variety of reasons.
Just go all out with it because this would be well worth the investment for Disney and ensure Chapek would be seen as something other than Iger's fall guy. Do a simulcast of the series finale on Fox, FX, FXX, Freeform, ABC, and maybe A&E. Something as big as The Simpsons series finale is going to attract a lot of viewers even with Zombie Simpsons taken into account and if Disney goes above and beyond to win back the fans for the final season, it will pay off massively.
Even if they just bring back the good writers for the series finale and the Treehouse of Horror episode while putting Stark Raving Dad back in rotation (or do an uncensored Blu-Ray boxed set series) but letting the rest of Season 33 be typical Zombie Simpsons crap, it could be worth it.
Hell, I'd make the final Treehouse of Horror an hour-long special as well and even bring back the wrap-around segments, the tombstones in the opening sequence, and Lisa giving the disclaimer at the beginning. Marge may have been the one who usually gave the warning but Kavner is near her end anyway and you could make it like Marge passed the torch to Lisa. It'd also work on sort of a meta level since early Marge was more of a conservative-adjacent Karen while Lisa in the Zombie Simpsons years became an SJW.