Why is it "stupid" ?
If Delta thinks it can't operate it's own feed effectively, then why not facilitate an offline passenger's flow into a 767?
We need to develop a business model that allows us to perform our own flying profitably. Until then, this makes sense. That must be why we (both ALPA and Management) keep facilitating outsourcing.
Hence the reason anyone who desires improvement in job security provisions must resist the "outsourcing is good" logic as the never ending tactical retreat that it is.