Then warn him, where were the warnings? It's a title fight FFS, the REF was poor in not letting Khan know that what he was doing was unacceptable. He should've been warned at least twice before any point deductions. Ali pushed all the time, so did big George, so did Joe. It doesn't make it right, but at least give the fighter the knowledge that you're onto him and as the referee the next time you do it there will be a point deduction.
I'd like to see a ref deduct a point every time Floyd uses his elbow?