Compton has/had tremendous potential. I was looking through his IG and he brought the whole package, great wheels and one of the most complete backs on the pro circuit. I reckon Justin is even better than Dallas was and that is saying something. Really unfortunate if he has hit some health hurdles on the way but seems like he is doing the sensible thing and taking his time and letting his body heal and adjust.
I think you were looking at someone else. If had had what you stated (brought the whole package) he would be on top of the heap now. You could tell he was going to only be a mid pack guy if that at all. He grew too fast, and he looked like a shorter version of Wolf, with better calves, and was missing a lower back. And he looked unhealthy on stage. There were even people on here who have seen him in person and said that he looked and sounded unhealthy (when he was competing).
He actually looked better when he first started out. It's good that he took his foot off the gas, so to speak. It's better to quit it altogether and find another hobby, like rock climbing like Dave Fisher used to do.