I can't opine on the translation of musculature to arm strength but yeah, it probably doesn't matter much.
But if you want to survive in the NFL at a position that regularly takes hits, 180 soaking wet probably isn't an optimal strategy.
That would certainly be the inflection point for the future of the organization. I think Morgan knows better, but we sure as hell are doomed if he doesn't.
From one of the more optimistic huddlers... no way in hell he posts that stat line. It will be the same it is every week:
X/Y for ~60% and 1xx yards. 1 TD, 1 INT. 5.X YPA.
Could the team win? Sure. It will be despite, not because.