I blacklisted Chrome in dnf (the Fedora system update manager) once we hit near the last version to allow manifest v2, but apparently it wasn't enough. They reached in to my system and deactivated/deleted my manifest v2 extensions anyway regardless, even though my version still "supports" them. I'm quite displeased to say the least. Ultimately it's probably for the best though as now my "slow fade" plan has to be accelerated. Time to rip the bandaid off.