Chrome's MV3 finally has some kind of an initial early response/idea up for how to handle UserScript extensions.
https://github.com/w3c/webextensions/issues/279

i'm having a hard time assessing right now exactly how limiting this is. the store probably still bans "remote code" even if this capability exists, which imo is a great & vast constraint to impose in mv3.

i think i did an ok recapping some of the really hard to work out feelings i have in this hn comment. i don't think this is "evil" but it's hard to recognize how such a radical vast reduction in user-agency was ever considered as passable. this is such an obvious fiasco. don't fuck with your power users! you've taken away >50% of the platform! how did you think that was ok? it's insane. and the timeline shows there's no sense of what real change management takes.
https://news.ycombinator.com/item?id=33015827