Well, he acknowledges that you can do native code, but then he argues that native code is actually bad because the marketplace isn't screened, so people can eas

Well, he acknowledges that you can do native code, but then he argues that native code is actually bad because the marketplace isn't screened, so people can easily post malware that relies on native code exploits. His unspoken assumption is that Apple's manual review process would somehow reject an app that contains a native code exploit -- which is baseless. It's not like they have people reading the source code. As far as I can tell, the reviewers just run the apps to look for content and branding problems, and sometimes they don't even catch those. And an exploit relies on a flaw that the system designers don't know about -- the reviewers wouldn't know what to look for even if they wanted to prevent exploits.