I agree. GrapheneOS uses chromium for Vanadium as it has far superior sandboxing to firefox, meaning it has more security. However vanadium doesn’t have adblocking.

So I use brave on mobile, with some settings tweaked recommended by privacyguides.org. Also brave uses chromium which is the only way to install grapheneOS in the first place, on desktop.

Also out of the mainstream browsers brave is far superior to all of them out of the box, even firefox, for those who arne’t into researching the perfect browser. It has in built adblocking and decent default settings. I use librewolf 99% of the time.

• Side note I did some research proton is owned 80% by the proton non for profit something which is pretty cool.