When Google wants a feature implemented in Chromium, it gets implemented, pretty much regardless of how buggy it is. When I want a feature implemented and Google wants it not implemented… tough luck.
But at least Mozilla do a basic back-of-the-envelope “is this feature a huge security vulnerability” check before shipping. (Looking at you, <portal>.)
It's hard to get behind engine diversity when Mozilla is trying to take the web in a direction I don't really want.
Meanwhile Brave does the same thing, but with Cryptocurrency.
I wish we had an open source clone of Vivaldi.
FLoC seems to be pretty irrelevant to anyone not directly working on ad infrastructure, so I'm fine with Mozilla ditching that.