Oof, that quote is the exact brand of nerd bullshit that makes my blood boil. “Sure, it may be horribly designed, complicated, hard to understand, unnecessarily dangerous and / or extremely misleading, but you have nOT rEAd ThE dOCUmeNtATiON, therefore it’s your fault and I’m immune to your criticism”. Except this instance is even worse than that, because the documentation for that command sounds just as innocent as the command itself. But I guess obviously something called “tmpfiles” is responsible for your home folder, how couldn’t you know that?
There are a lot of valid reasons, other than security, for why you wouldn’t want that though. You don’t necessarily want to allow any client’s activity to be traceable on an individual level, nor do you want to allow people to do things like count the number of clients at a particular location. Information like that is just unnecessary to expose, even if hiding it doesn’t make anything more secure per se.