Been using brave for a few years on mobile and desktop.

They uses to give away BAT, but they have refined their system to not give any unless you spend hours jumping through hoops and linking shoddy Chinese financial apps and crypto wallets.

I still use it for the privacy, but after reading this I will likely switch back to firefox or another chrome based browser.

Yes

Firefox has extension support on android

edge has built in adblocker

samsung browser has built in adblocker

not sure about iphone…