I don't get why there's confusion with his name

I've seen a surprising amount of people calling Booster "Jon." That's his middle name not his first name. I've seen more characters calling him Michael than his full name so I'm no sure where this came from. I even recall this happening in a comic and most assuming it was Rip`s real name. Which makes no sense because I don't see him naming his son after his abusive dad.