[entropy_]

Well, if an app author is going to go the extra mile and write a mechanism to complement apple's deficient review system, you can't really ask them to be neutral while doing so. Think about it for a second, how could they have done it differently? The only viable option is to remove the link to leaving a review after the positive feedback and that's removing functionality(If I found an app useful I want to help the developer by leaving a positive review). I can't really blame anyone for not adding a link to leaving a review after the user has given negative feedback, I definitely wouldn't to it.

Furthermore, I don't use iOS, but if review patterns are similar to those on Android(and I can't really see why they wouldn't be) then I can really see where the app's author is coming from. Most negative reviews I've seen(especially on actually good apps) have been things like "1-star doesn't work!" in a sea of "5-star awesome app!". You can hardly blame a developer for wanting to know how it "doesn't work" instead of just getting a vague review that doesn't explain anything.