Just as a side note: While the Community User's profile calls him a background process, that's really just a simple explanation in the easiest possible terms.
All it technically is is a special user account that's used in places where we need a user id, but no user is actually responsible for whatever the thing in question is, maybe (as in this case) because a user doesn't exist anymore, or we need a pseuo-edit (a.k.a. bump), or the actual action was anonymous (as can happen for suggested edits). There's no "AI process" surfing on Stack Overflow. Just an id to fulfill a foreign key constraint, if you will.
He/she/it does get yelled at sometimes, though. But we still love him/her/it.
