He's not claiming that someone who programs for iOS is a bad programmer. At all.
He's claiming that people who identify themselves as an "iOS programmer", rather than just a "programmer", aren't really programmers. A "programmer" might be able to write inspiring stuff for iOS, but they haven't pigeon-holed themselfs into being an "iOS programmer"
He's claiming that people who identify themselves as an "iOS programmer", rather than just a "programmer", aren't really programmers. A "programmer" might be able to write inspiring stuff for iOS, but they haven't pigeon-holed themselfs into being an "iOS programmer"