If Blackwell had been ok afterwards, would people be making a big deal out of the fight not being stopped? That's all you can really ask as far as how it was handled. It was a routine mismatch with the loser being to tough for his own good, complete par for the course in boxing. If the fight had been stopped far sooner, Blackwell might have wound up in a similar way a couple of fights down the line, still partially a result of the damage he took in this one. It would be nice if there were medical advances that allowed people to detect disposition for risk of brain injuries in the future, barring that about all you can suggest is that people not get punched in the head for a living.