Oh, I get it. It's a weird self-reinforcing meme (in the classical sense). People see it, so they write it, so others see it, so they write it, some of the ones

Oh, I get it. It's a weird self-reinforcing meme (in the classical sense). People see it, so they write it, so others see it, so they write it, some of the ones along the line think there must be a good reason so they're really careful to write it, and so on. Really similar to how language evolves generally, through misunderstandings or misappropriated terms that come to actually mean the thing they were initially mistaken to mean (possibly losing the original sense entirely, sooner or later), except that in this case it's not actually signifying anything. Just a linguistic tic.