Nothing is tested for Firefox. Nothing. I’ve had unending trouble getting advanced things to work (like VTTs for D&D) to the point I just assume it won’t work the moment they say they run Firefox.

I also have some pretty strong personal qualms about the operation and stances taken by Mozilla.

I do not run Brave, though I understand why others do. It offers a nice compromise. I hop about a bit, but atm I use Edge on all platforms. I do my filtering elsewhere in the network stack (pihole, etc) and also have UBlock.

There is a line for every person, between certain of their ideals, and making things work (pragmatism). I respect it’s different for everyone, but I’m very heavily skewed towards pragmatism.