Why is it not true? What attack are you protecting against? > why not just run the browser as root? Practically, last time I tried Chromium wouldn't let me. B

Why is it not true? What attack are you protecting against? > why not just run the browser as root? Practically, last time I tried Chromium wouldn't let me. But Firefox did, at least. The better answer is that they can use some level of internal sandboxing so that an exploit affecting one part of the browser doesn't make it out of the browser, and AIUI if every part runs as root it's easier to escape that layer of security.