Even though it was still a freak thing, that’s the risk you run when you throw a kick at an upward angle like that. Unless you turn your hip over, your bone is at a bad angle and more susceptible to injury. Same thing happened with Anderson when that happened. Sounds weird to call it bad technique but it kinda is.
Like why not just say ‘I was gonna cut him if he lost anyway. At least now he’ll probably just retire’.