The main issue is that new recruits can't get online quick enough, mainly because the company that the reference checks was outsourced to is beyond useless. There are around 150-200 crew who are waiting for their clearance to come through - I'm one, graduated 6 weeks ago and still stuck on the ground
Speaking to an instructor, he did say that the redundancies were oversubscribed so they had to have an extra push this year. Heck, they are still recruiting now for this summer.