@rolle @brave @Vivaldi fwiw, I don't have this issues because there is *almost* no alternative. For me (with emphasis on that last part: "me") Firefox is the only viable. Or even some radicaler unbloated Firefox versions (as @librewolf)
As frontend dev, of course I do test my work on safari, chrome and firefox. And that is it: testing.
Brave and Ladybird are (again: for me) dead projects. The first is lead by a homophobic conservative intolerant cryptobro and the other by a fascist.