I agree that muay thai has a high intensity level because they are working towards going in the ring. But, like you said depends on the school and individuals. My instructor has suggested that me and one of my friends start training for full contact. It would be almost like Olympic boxing. .You get points but it is conitinous. The good teacher will cater to the needs of each student. Our instructor has had me and my friend start some more intense training techniques because it suits our needs.
In addition, from looking at the posts on how you muay thai guys spar it sounds pretty much the same as we do. You seemed to think that we don't make any contact. We ALWAYS make contact in our school.
But, I do get what your point is tom