He did not sabotage them - the usual punishment is at minimum a zero on the relevant assignment/test/etc., and frequently extends to outright failing out of the

He did not sabotage them - the usual punishment is at minimum a zero on the relevant assignment/test/etc., and frequently extends to outright failing out of the class. Scoring worse on the test due to their cheating is irrelevant as it'll be reduced to a zero. From an ethical point of view, he has done these students, the university, and the world at large a huge favor.