Typical Pioneer BS. And, if Apple is holding up approval, it's probably because Pioneer's half-baked software just doesn't work.
I'm not an iOS developer but we have hundreds of developers who submit apps to Apple. It's not an easy process, very tough to get something through. But yea, maybe Pioneer doesn't have a competent/capable person who can design/submit an iOS app that can reliably pass Apple's stringent vetting process.