(Neither a doctor nor scientist) My first assumption would be that it would actually pose additional threat of re-injury. Tendon injuries, for example, are more common in AAS users, I would assume because the strength of the muscles progresses at a rate at which the tendons can't keep up (not sure if the exact reason why has been studied). AAS would allow one to regain muscle mass and strength quickly during recovery, but it's not doing much for the thing that you tore in the first place.

I think we all know the crowd he's apologizing to. The same people that call everyone with real problems "snowflakes" but cry and play the victim at every chance they get, no matter how imaginary the problem.