I gotta say, I agree with the OP.
I recently got interview offers from Delta, Spirit, Virgin America, and Jet Blue. They sent me similarly informative emails. Being up-front as this was disgustingly offensive to me as well so I reacted just like the OP did.
I sent emails back to them asking how they expected me to leave a place with a complete lack of communication for one that actually has the audacity to tell me what I should expect!
No one tells me what to expect but me!