It's not accurate at all, though. I use my arm and my asshole for completely different things. There's no danger I'm going to accidentally wipe my asshole across my face. If I shit on my counter I would clean it and disinfect it immediately, but I shit in my toilet every day and only clean it every few days and never disinfect it.

I like to live in reality and not a world of what-ifs. About 50% of my shits are immediately followed by a shower. As far as I (or anybody else so far) can tell, whether or not I followed the toilet paper up with a shower has absolutely zero impact.