he said that bitcoin has an end, but this is very vague, when will this supposed end be and what had caused this supposed end? are things he can not say because he is guessing and not sure, let's say someone says: ok, if you believe so much that bitcoin has an end then bet your life and material goods. I doubt he would agree to make that bet
Are these professors failing to grow with technology?
depends, computer engineering professors, software engineering professors and IT professors accept the technology, some economics teachers are the ones who are more against bitcoin, because many of them are fans of gold, oil and banks.