And it has all kinds of implications and context and shit.
How the fuck am I supposed to tell what's just people doing things at random and what's a part of all-singing-all-dancing-shit-show the neurotypicals call "social norms"? Down with NTs.
Honestly while it's really fucking annoying that refusal to participate could result in some silly neuronormo interpreting a completely innocuous action as an offense, and it can cut you off from social shit, I think it's basically the only way. The same button never does the same thing twice. Screeching rn.
Your heart can hiccup/stop if you sneeze hard enough. It's kinda like a "In case you pass out/die". I'm not NT, but I was born, raised, and live in the Southern US. I kinda just autopilot it.