Not widely from anything I've seen or heard.
I believe the answer to the question is similar to "do friends/players at the same stakes share HHs."
I'm sure someone, somewhere out there does (or several people), but the vast majority do not.
Who called you a "regfish?"
Usually, even if people are losing against people they think are bad, their ego tells them they are just unlucky, so you're not likely a target for sharing even if the player you're facing happens to be a cheater