Really? Says who? You need a lot of discipline and respect in an MMA gym I can tell you, self discipline, always the best kind, saying yes sir no sir isn't discipline it's going through the motions. Do you imagine that people who do MMA can't work out for themselves that techniques can very easily be made lethal? Do you think that because they fight with rules that if they are attacked they still abide by those rules? They don't, they know very well which techniques are 'illegal' and can very easily do them as well as the 'legal' ones if they have to. Underestimate MMAers at your peril.
The focus in MMA is training, training, and more training, the fight is the fun part, the least of it all. A bout will have three-five rounds of three to five minutes, that's nothing, it's the bit you get to enjoy. Training is everything.