They’re not going to retcon the Sequel Trilogy. Like how the previous generation had to come to terms with the prequels being forever a part of Star Wars, the current generation will have to come to terms with the sequels. There’s hope for them to be slowly improved and augmented with ancillary material - what you could consider a slow retconning, maybe - as the prequels were,
Yes and no–when Disney took over Lucasarts, they erased all of the prequel era ancillary material. And in fact they very obviously pushed the sequels to ignore all of the prequel-introduced concepts (Darth Plagueis where are you) and soft-reset the entire series.
I wouldn’t be so 100% convinced no big erasures will never happen again.
Also, cheap “redeeming” retcons of villains is just distasteful and weak writing. I recall some story that attempted to retcon Anakin’s youngling killing into “actually, he just drew his lightsaber and then ordered the clones to shoot them.” Kylo “accidentally” blowing up the school reeks of the same attempt to make bad guys into good toys. May as well make Book of Boba have a cameo by Han Solo where they become friends because Boba was ACTUALLY trying to protect Han from Vader and also deliberately missed when trying to kill Luke.