What are the default permissions for / and /boot on Arch?
So I've messed up by not formatting my partitions on installation and now things are buggy, dbus returns permission denied on starting is one of the prominent bugs at the moment
Just do the installation again...fixing the permissions maybe easy or extremely hard, depending on how far the problems go. And I don't think you will learn much besides of how the chown command works.
Not with modern package management systems. In the pacutils package is the pacrepairfile tool that is specifically made for repairing file permissions https://man.archlinux.org/man/pacrepairfile.1
I think the point a lot of people are making is that because it's a fresh install it might have been quicker and faster to just reinstall versus whatever kind of checking and troubleshooting you'd have to do with the permissions.
It was only the root of the partitions that I messed up, and I guess the bugs were caused because the Mint live boot only gave the user read permissions (no group or others can read) so I believe shit is fine, plus it's a fresh installation so there's that too
Good on you for getting it fixed. One of the reasons Linux is a great OS in my opinion is that everything is in the file system and not in some arcane hidden thing. So every problem is solvable without a reinstall if you're motivated enough to figure it out.
Whenever I break something and can't figure it out, I just make sure anything important is backed up and do a clean reinstall. Someone else might have a better answer though
It depends on how interested/motivated you are in finding out exactly why things aren't working. If you just want a working system without the hassle, since it's a fresh install, I'd recommend just reinstalling.
Things weren't working because of the owner+permission being set by Mint instead of the Arch installer, it prevented non-root from reading anything off the system, now that I chmod the mount points, things are functioning well