Let's not forget that he actually hit one of those misses and the refs called it wrong. Not that that's relevant to how his coaches regard him but since we're talking about percentages with a small sample size he's really at 76% not 71%.
Also 18/19 on extra points is a good number ever since they stopped being gimmes. You typically see several missed each week around the league.
The actual premise behind this thread is ludicrous though. No excuse? A rookie struggling because he's a rookie is about the most reasonable excuse there is in this sport.