Braves success proves that's Firefox's problem, and not that user's don't care about privacy.
Brave has <1% market share.
I've been daily driving Brave on every machine and device I have for a year or so now... and I really wish they would have just stuck with the "Privacy Focused Chromium" thing. They've wandered far down this path of "lets just add every feature that comes to mind" and it's really not helping it's usefulness.