I do not agree. His percentages are low because he is playing alone. I do not have a PG who can pass him the ball (now I signed up Fuhua but he is not a PG either) and, because of his (and his teammates') training needs, he has to play as SF most of the times. A part from that, he has been in GS7 for the whole season so far because he is playing too many minutes.
Last season I had at least an average PG (Tant, with just PA 12 and high handling) and Aron hit >50% from the field and >40% from 3, even despite the fact that he had to play most of the time out of position because of training. If he had played in his position and together with a good PG, his percentages would have been even better.