If it's "too generic" the recruiter is dismissed as being lazy and spamming - "too personal" and the recruiter is fake.
I do understand what you mean and have seen recruiters that try to get a bit too chummy. By relating to someone, I might mention if we went to the same college or if I know people from their company or group they belong to. I'm not going to ask about their kids or spouse unless it's someone I know well.