Disclaimer, I haven't watched this, but I have watched some detailed synopses by reviewers I trust.
- the film basically shit on or ignored just about everything Rian Johnson did

This is a problem with the DIsney trilogy.
On the fluff forum whenever says "Let's do a collaborative story where we all take turns telling a part of the story." I am really terrible at those games. Even if it's a casual party game or campfire activity I get huffy about it. "I had a character arc and a theme and you ruined it!" If someone brings up doing this in the fluff forum. I won't tell anyone they
can't do this, but I'm not going to participate.
I doubt the trilogy would be a masterpiece if Jar Jar Abrams directed Episode 8, but it's clear that either Abrams and Ruin Johnson didn't talk to each other or Johnson
hates Abrams and deliberately tanked his plans.
So episode 9 was a narrative train wreck largely because Jar Jar had to undo most of the events of episode 8 and awkwardly salvage his original plan. It's clear he planned to use Snoke as the main villain but now he couldn't among other things. He also had to operate under a committee. by trying to please everyone you end up pleasing no one. It's clear that Jar Jar tried to do all these things.
-Throw an olive branch to the original trilogy fans
-Maintain the new Disney trilogy fans
-Don't make it too complex though, we need to maintain the popcorn movie audience
-Throw in a dash of SJW-ness to keep the SJWs happy
-but not TOO much SJW, Disney wants to keep conservative casual fans happy.
-but not TOO much SJW, Disney wants to keep conservative casual fans happy.
-I know, lets put in a same sex kiss but make it very brief and not in the center of the screen, much like we did with
Beauty and the Beast. Best of both worlds. Brag about our LGBT street cred while staying mostly in the closet!
-There is no sex or romance in episode 7 and 8, we need to put some in here.
-It can't be Rey and Finn because that will offend China and Europe. Both Chinese and European audiences typically don't like seeing interracial dating.
-I guess some people want to ship Rey and Kylo. So lets throw in some lowest common denominator teen romance "tame the bad boy" thing.
-We need over the top bad guys and no one really took Kylo or the First Order seriously
-BUT they cannot resemble the CCP in any small way or the CCP won't let us screen this in China
-We need some tie-ins for merchandise and theme parks!
-Can we stick Baby Yoda in?
-We need to throw in some Easter eggs to the Mandalorian because that's where all our good faith is.
-Can we stick Baby Yoda in?
-We need jokes, people like jokes!
-Maybe George Lucas can salvage this?
-Can we stick Baby Yoda in?
-We need to kill some more original trilogy characters to elevate our new characters
-Oops test audiences hate that, we need deus ex machinas to keep them alive, but don't change the setup that killed them in the first place.
-Lens Flares, because Abrams has an obsession
Throw this altogether and you get a narrative Frankenstein monster
EDIT: I had some memory flashbacks to when my friends and I played Star Wars the Roleplaying Game. Basically between 11 and 15, we played it at least once a week, usually a lot more. This was before the prequels. We took a lot of liberties with Star Wars canon because it's our universe and our characters. Not a big deal, but there are limits. About half of our games took place before the Battle of Endor and about half of them took place after the Battle of Endor.
One game, we all played Dark Jedi. We
kind of worked for the Emperor but we also kind of tried to subvert his orders. We spent most of our time building a criminal empire on the sly. One day the Game Master was like "Hey, I have some new story ideas, but I think this would work better if it happened in the Expanded Universe. Is everyone okay with you guys getting cryogenically frozen for fifteen years."
We shrugged ours shoulders. "Why not, we didn't like the emperor much anyway."
"Okay, so you guys are unfrozen, and it turns out the Rebellion and the remnants of the Empire are working together to fight off the Borg."
All the players as one "I don't want to fight the Borg in a Star Wars game."
The game died.
We twisted canon a lot but you can only twist canon so much without breaking the setting.