It's not too soon to judge - plugins I used no longer work unless I turn off auto-update or move to the LTS version. The team knew these were breaking changes for months or years, but the APIs to un-break things don't exist and aren't prioritized. It's discouraging to collaboration when you look at 2+ year old issues (https://bugzilla.mozilla.org/show_bug.cgi?id=1215061) that still haven't been properly addressed.