If you're using a personal machine, there is very little you're gaining by not running a browser as root. The security gain is significant on multi-user system

If you're using a personal machine, there is very little you're gaining by not running a browser as root. The security gain is significant on multi-user systems where you don't have sudo/doas privileges at all - even if a user is compromised, the system administrator should not have to worry about it.