There are other reasons beyond privacy to use forks. For example I'm currently trying out Floorp, mainly due to the support of PWAs and better integration of vertical tabs with Sidebery. No CSS required to make the horizontal bar disappear
I may burn a lot of reputation with my comment ahead, but: I'm a bit tired of privacy-focused web browsers. As you just said, it's not the only use case there is.
What's the differentiation among all of these smaller niche browsers? Can't we escape sameness?
More context: It's not that I don't care about privacy, I do. I'm just fine with some defaults. I don't need (or want) something like Tails. There's some level of privacy that becomes unwieldy to manage.
Yeah, I've already switched back to Firefox. But I have to point out that Floorp has more features than just CSS. Support for installing PWAs and split-mode.