Count Iblis asks:
"Of course, Professors do teach. The point is do they need to teach? Will the university educational system collapse if we decided that Professors don't need to teach anymore to undegraduates and let other staff, lecturers etc. take over that duty?"

Yes it would. And if any professor is incapable of sustaining that burden his tenure should be challenged.

BTW: You contradicted yourself yet again in your response.

DA Morgan