Absoutly, the whole reason why you can take stomach but not face shots is because its foriegn(duh), plus getting hit in the head i find is more situational while getting hit in the stomach stays pretty much the same.
I agree with you in alot of ways, i think the more agressive martial art can stimulate a fighting spirit or stimulate your feelings of martial arts in different ways and i think alot of different people get activated in different ways. Thats an interesting topic you brought up...
Those guys are holding karate back , I mean , there is nothing wrong with kata , but when it comes to kumite it MUST be done full contact and MORE OFTEN I agree with you but in less concrete ways