EDIT: Ignore, I was tired lol
As I'm sure you realized, he's referring to getup attack. I've had this experience too - there are times where I intentionally miss tech and plan to wait a bit before rolling/standing/attacking (so I know to not touch any controls), but asap after landing, my character starts a getup roll or getup attack anyways. Never regular standing getup, which may or may not help. It's pretty annoying. My guess has been that either buffer windows for missed-tech getup options are unusually long, or...idk, bad buttons? I've used several controllers with such minor slants on the control stick that they aren't apparent at all through gameplay, but are enough to rotate the pause screen when left untouched in "neutral" position (and always returns to that slant if you attempt to keep it from rotating, by nudging/holding it at the actual position for the neutral input).