Except that not every rookie ever shows mental issues like unsportsmanlike conduct penalties and bad angles. That's the criticism of him right now, through 2 NFL games.
Personally I don't think being a rookie excuses the penalties part, we have plenty of other rookies not doing it. Morgan getting a dumb penalty cost us a game last year; a real game.
Those issues tend to be caused by something mental. Showing them at this level is a problem because one would think they have been told not to do this their whole football career - did they never listen and learn or are they trying to prove something now at the next level and getting carried away, or did they never get caught at the other levels?
I'm someone who thinks playing smart matters a lot, so it's something that bothers me. There are plenty of people that don't agree with that and that's fine. It's 2 preseason games. If he does it in week 3 that's a problem, one that suggests he's going to be doing it all year. We're not talking about complicated rules here, we're talking about not getting into shoving matches and hitting people late...
I can deal with bad angles through a year of being a rookie, though Landry still haunts me...