Is that a rebuttal? That makes no sense: as it is the target platform, of course it is required.
The point was I don't need a Chromebook to develop Android applications. I don't need a Microsoft Surface laptop to develop Windows software. Somehow, Apple requires you to buy their expensive hardware to develop for their platform. There's no technical reason you couldn't just get their OS and development tools; they just want you to shell out for overpriced x86 hardware along with those.