It looks like the status bars window manager users tend to customize

sudo chmod -R 777 /

Correct but it uses the SUDO_EDITOR environment variable. The benefit is more security while editing system files, it creates a temporary file and when you finish it writes changes to the original. There is more to it but that is all I know, it prevents some exploits.

Users with one downvote on every recent comment/post is usually some other user raging and being incapable of accepting other people’s opinions.