I remember reading there, when it wasn’t on github pages but it’s own website, the recommendation to keep your critical dotfiles permissioned to a different user account of yours. I don’t think that’s bad advice. Yes it is probably not needed if you use the system as a pro sysadmin for server purposes, but for desktop use it’s just natural that you’ll run a lot more programs in a much less controlled manner.
Of course there were ones that I thought they went overboard, but it has at least a few good pieces, if not more, I don’t really remember.