How does Apple manage to have human reviewers and engineers you can talk with on the phone about App Store issues? It seems like it scales just fine for them.
You can't talk to reviewers on the phone.
No, they do not.
> If you have a question about your app's review, send us a message in Resolution Center. If you would prefer to speak over the phone, just let us know in your message, and we'll schedule a call.
- you're not talking to a reviewer or engineer unless you are a high tier dev. Bulks of devs could get standard customer support just hearing their grievances out, the same way emails get canned responses.
- devs don't all get access to the same resources or attention from Apple, and your support tier will largely depend on your revenue. I wouldn't expect a long tail app to get much attention.