Genuine question about the RFS: Why so specific? If the idea is get iphone-replacements into developers hands, why not just say that. 'Development on handhelds

Genuine question about the RFS: Why so specific? If the idea is get iphone-replacements into developers hands, why not just say that. 'Development on handhelds' sounds like a reasonable idea, but maybe it's impossible. Maybe it's just one of several possibilities. 'Get developers using something other then an iphone' seems like something that could at least yield some good ideas. Is there any reason the RFS is so granular?