Cormier has the worst takes in the game and Hill is perpetually salty. Had Hill landed a legal kick, he would have been in the same position to get KOed.
[Hill should have been advantaged by using an illegal strike and allowed more space to get his back of the cage] is certainly a take.
Backup up against the cage without a safe way out? Kick your opponent is his balls and the ref will be required to give you space (according to some dumb-ass non-rule that Hill and DC made the fuck up)!