I posted this over on the other site.
The kickstarter mentions a few names but it doesn't seem like Kurvitz or any had any involvement in this, and one of the leads of this project is an AI techbro consultant claiming he was one of the original creators. And yep, Longdue sued one of the original writers and won.
This one's a HARD pass.
Just to clarify, Fennec is a privacy-focused fork, kind of in the same vein as libreWolf but not as extensive. Since LW isn't available on mobile, Fennec seems to be the next best thing.
I can't really think of any browsers that have all the features OP is looking for. FF (+forks) is probably the closest thing out there.