Ask HN: Why do all recruiters start their messages with “Hope you are well”?

It's not as if there aren't other ways to express a similar sentiment, but I'd say 80% of my recruiter emails on Linked In start with some variation of "Hope you're well" or "Hope all is well". Is there a massive training program out there for recruiters that tells them to do that or some template in recruiting software that uses that phrase?