Sitting on your ass and not even attempting to come back isn't gonna lessen the odds of you getting hurt on a random November night against the Bobcats.
It would be one thing if Rose came back on a strict minutes limit just to see where he is. It wasn't gonna cost the Bulls a playoff spot. If it cost the Bulls a playoff seed it woulda been from 5 to 6 which actually would allow them to avoid Miami, and if Rose still wasn't comfortable, everyone would understand a lot more because he at least tried to see where he was. Instead that dude's dunking, shooting around, doing whatever and then he's in a suit.
He'll never know until he's out there in some form. Now instead of at least seeing where he is in terms of mental confidence, that shyt will haunt him all summer and dog him throughout training camp, and on top of that, his teammates who have been banged up all season probably respect him a lot less.