Hmmm...you seem to think he felt Apple was obligated??
Well they said they found it odd that the app wouldn't work right with a beta, implying that they thought Apple should make it compatible when in reality they don't have to since betas aren't technically intended for daily use.
That's not how I read it. I find it odd as well since you'd think the dev teams MIGHT POSSIBLY work together and update their apps as they go along. This in no way implies I feel Apple is obligated to do so.
I think a lot of ppl in this forum have a tendency to jump to negative conclusions regarding anybody that has any negative experiences to report about the beta "because they aren't devs and if they were they'd report the bug appropriately". But I think this forum is here specifically to discuss such things and the attitude is unwarranted. (If I've misread your intentions, then I apologize.)
Additionally, developers aren't allowed to submit their apps with iOS 7 support until the GM so why should Apple feel the need to?
it's a beta, ios6 apps haven't been optimized to work with ios7 Jeaus Christ why do people act like these beta releases are like a final update and complain about stuff not working