You’re welcome to him!
The issue is that he is an ordinary centre. He is strong and he’s not slow, but he isn’t agile with no acceleration or change of direction. He also has no ball skills whatsoever and has less footy IQ than the ball itself! In defence he is a strong tackler, but his defensive decision making operates at about 50% at best.
In summary, he’s a 1 trick pony who is good at tucking the ball under the arm and running hard. He escapes scrutiny because he is a Mary favourite and because he’s a local junior. We have a better option sitting on the bench for 70 minutes a game, while Aitken gets told he is in great form simply by not completely f**king up.
TL;DR - we at the Dragons have a low bar for success, so Aitken fits right in!