Yeah, perhaps not their greatest move ever. I miss how customizable Firefox used to be. For a long time I used Waterfox Classic to postpone the switch, but it got harder and harder. Now you have to use stuff like paxmod to get back some of the old features.

I don’t know the internal technical issues too well, though, and they have made a lot of headway in the speed department since switching. I do recall discussion around when they dropped them about being held back by the addon architecture.