With this attitude you can expect uBlock Ultra-Lite and then uBlock Nothing in future. Mozilla is the only remaining obstacle to stop big tech from deciding everything about how the web is rendered. If we don't support Firefox we will get what we deserve.

Might be, but I can't take on every battle. I switched from chrome to vivaldi in the hopes of they would keep the v2 api alive. They could not. Currently I can't be asked to switch browser again. Maybe at some point.

But OP asked if "is this not enough of a selling point" and I wanted to answer that honestly.