Is his reasoning really something like this? Biz dudes needs rails to be popular so that they can pitch ideas while being clueless, but Zed has made rails less magic, so now the Biz dudes hate Zed because now they have to have real ideas instead of buzzwords.
Really an elaborate explanation for simple name-calling. Perhaps the rude guys are just that - rude guys. To over-think it is nothing but paranoia.