I haven't followed this thread in depth, so I'm not truly abreast with the pertinent particulars, precise process, etc., other than the situation is quite unfortunate. That stated, some of the responses here are interesting. Maybe, as bnoro, has mentioned, some of the responses are influenced by the subject's parent posting here, again, maybe. I don't recall this much emotion about SU's process when other players were DQ'ed. I don't recall the outcry for AJ Long (a starting QB for us back in the fall of '14) when he was dq'ed and he went on to play at another school.
Medical opinions can vary, even significantly at times. I spent a number of years in the insurance industry and often observed/read many detailed narrative type reports & evaluations from medical doctors that had quite different assessments of the individual subject. This could range from permanent partial/full type impairments by one physician to none/nominal or slight by another MD. Opinions, even from qualified individuals, can and often do vary.