I think most of us could have anticipated this from the timeframe thus far:
Announced at WWDC with availability "this fall."
Posters and printed material to selected journalists at the end of October.
Orders accepted December 19, with initial shipments by the end of 2013.
Orders past the initial rush with a delivery timeframe of February.
Clearly, this product was nowhere near ready for a fall launch when it was showcased at WWDC. I would have had more respect for the integrity of the launch if a separate hardware event had trumpeted the availability (of more than a few units) in early 2014.
I accept that this is a difficult product to mass-produce, especially in the rarified working climate of the United States. Still, could the rollout not have been handled better than this?