My take on it is Johnson is a practice puck eater for 4 to 5 seasons while getting in a game at some point to get his Midco moment ala Tate Maris. Didn't have super great numbers in the NAHL, but did his due diligence coming to a lot of the summer skating sessions with former/current players that Bubbs brought him in as a walk on team guy.
With the goaltending that the team has gotten this season if he was capable he would have been in the net by now. Sounds like a great teammate, always willing to take more pucks from guys working on things in non practice settings, and loves his cheese.