Yeah, it seems the more complex the system is involved, the more difficulty it could have, but the more basic, the more it catches on and boosts (with other common externals). Just a guess that I'm probably very wrong about, though.

What's most fascinating is that it took so long to get looked into because we clearly just normalised tattoos for a looooong time with no obvious or common negative effects in history, no one's really ever thought to look into this sort of thing until last year. Of course when they do, "Okay, so this may cause some issues for some people...but, eeeeh, it's mostly fine."