I don't know how you take that quote any other way than what I said earlier, unless you want to believe Dylan is a fatboy. Rhule is simply saying he is working on his body comp. Again, something every young athlete does.
Than fanbase was poking at Dylan's weight since he stepped on campus so I don't think any discussion by coach is really unprompted.
You said you didn't think Rhule said he needed to lose any weight. I don't think it's a stretch to say that Rhule though he could trim down a bit to be more nimble and able to run.
I guess if you want to semantic the difference between "body comp" and "weight", that's fine. But, again, I don't think you can read Rhule's comments as "he's fine where he is."