I've never had a problem on Firefox. What is the complaint people have about browser tabs in Firefox? The only complaints I've seen have been strictly cosmetic.

I do agree it would be nice to have more folders for my mobile bookmarks. It's actually one thing that perplexes me. Seems like such a basic thing. It definitely would not make me switch browsers, though, especially not to Brave.

Edit: Perhaps ironically, I just remembered the thing that made me switch from Chrome on Android once and for all was their insistence on displaying browser tabs as cards. At the time, I had heard many of the same myths and half-truths about Firefox that are being shared in this thread (slow, buggy, won't recognize certificates). Happily, I discovered none of these things were accurate, and in fact if anything it ran faster and more efficiently on my device. It was at that point that I also started becoming more concerned about my privacy, and I subsequently learned that I was already using the best browser where privacy is concerned -- I just had to adjust a few settings and switch to a different branch. Funny how "better browser tabs" is hailed as a reason to use a chromium-based browser, when I found the better browser tabs in Firefox all along!