Ugh. Now I need to choose between disabling updates for Firefox, which is a pretty big security risk, and giving up UMatrix, which I also consider to be at least somewhat of a security risk.

It's such a questionable decision. I understand that addons take a while to support, I understand for most users it's still an upgrade since they don't use extensions, I understand that at some point you need real users instead of just beta-testers. But they're taking a huge step backwards for user freedom. It's a bad look for Mozilla.

I'm disappointed. I wish they'd develop the apps in parallel until they had actual feature parity. Even if the old version of Firefox got pushed to a separate app; I'd be fine uninstalling Firefox and reinstalling 'Firefox Classic' from Mozilla. I feel like they don't really understand what the community response to this is going to be.