FF still hasn't brought back a tab group API for extensions or native tab groups. Extensions can only do so much given what they have to work with. I still use FF on the side, but it simply isn't a practical as a primary browser for me currently.
But for casual users, many probably have never even touched their browser settings.
Brave has built-in wallet support and such, but I don't think it does any mining, does it? It just has its own opt-in ad system to pays out in crypto and is also owned by a turd.