I don't think Gibson minds the aesthetic in particular; what he is saying, if I understand him correctly, is that nobody cares about cyberpunk except for the aesthetic. There's nothing beyond it. If there is something, it's the same old tropes about big bad evil 80s-style corporations, usually with a vague Japanese or Asian theme. Everything that was novel about cyberpunk has now been absorbed into the mainstream and has become just another trope to be used by videogame/movie/anime authors.

It's as lazy as it gets, and definitely not punk.