Every single time someone mentions they abandoned firefox for something "better", it's chromium based. Privacy is good, but the most important for me is to avoid monopoly/monoculture.
I chucked Brave shortly after they decided to install a VPN service on my machine without consent or notification.
A service that silently reinstalled itself on Brave update.
A service that did not remove itself when you uninstall Brave. It took a lot of research and time to rip out the guts of that. I will never trust Brave again.
I think brave should be disregarded as something safe and privacy respecting if they were willing to silently whitelist Facebook trackers in the past. Then there is their whole crypto obsession.
Only problem is that you wouldn't be able to visit most sites, because Mosaic only supports HTTP 1.0. You could go for Lynx, though. Just remember to disable the cookie support.