Notice that your teachers are actually rational, if you define rationality as success in life. Believing or at least declaring to believe something you disagree with did not hinder their ability to get the job they want and teach the classes they want.
I note that lottery winners are rational under this definition, and also that unless you have more information than is in the post, you don’t actually know what OP’s teachers wanted out of life.
I note that lottery winners are rational under this definition, and also that unless you have more information than is in the post, you don’t actually know what OP’s teachers wanted out of life.