Honor is over rated. He is fighting and should use all the legal strikes and tools at his disposal. Push kicks to the knees, foot stomps, covering peoples mouths with gloves, Cain's borderline headbutts, Wandy's soccer kicks, Franks 9 to 6 elbows the back of Tito's head, Keith Hackney's continous ball strikes are all legit. If it's legal go for it. MMA isn't about upholding traditional martial arts value. It is a combat sport and competition with specific strikes and tactics either being legal or illegal and who is better at utilizing those legal techniques.
"If a man with no arms and a man with no legs started learning karate, the same light bulb would appear over every head in Japan. That’s right: Glue them together and see if it can kill a panda."