It's a hall of fame, not a hall of statistics. He found a way to win. I'd feel comfortable taking the argument as pro, not as con for Snake. I don't know about HOF...Hall of Distinguished?
So every player on those winning teams should be Hall of Famers?
No. Not saying you are stating that as your only position but I have heard that argument before and I disagree with it.
Hall of Fame is about individual talent, not wins and losses. Now I do agree with you that stats should not be the only factor. And I also agree that system players that win should get a big star for that.
Try playing in different schemes with rotating coaches and see how hard it is to run up any decent stats, much less win!
But the main factor is stats. One of the few things I have liked about free agency, and there are only a few, is the fact that the criteria is what you have done, not how much you have won.