This is 100% accurate. I've seen someone apologizing for being stepped on (accidentally, of course). It really does mean "we have, unfortunately and inadvertently, crossed paths and must now ward off the evil spirits by acknowledging this".

Oddly enough "sorry" is also quite common in the upper Midwest US. If I bump into someone else by accident, and it's my fault, they will reflexively say "sorry."

I’m in the US and definitely have heard these in similar situations.

Another I don’t think was listed is a way to blunt an aggressive statement just in case there may be a misunderstanding.

“WTF did you just say to me?”

Might be “Sorry, but WTF did you just say to me?” would imply some anger that could lead to a fight but hey, sorry maybe I misheard you?

Which could funny enough lead to more sorries “oh, sorry I thought you said something else”.