I agree with both of the above posters. The expectation was reasonable in the circumstances that prevailed. I doubt there was any intention not to absorb the prospective cadets. As always that is dependent on the airline having an actual need at the point of graduation. There is always a significant element of risk, and in that respect these events have seen the sky fall in!
without doubt these events will also be life changing for a great many people and existential for a great many companies.