Ouch
So, reading this, I can interpret it as one of two things :
1) NVidia are getting kind of scared. Not because they are not ahead, but because their lead may be shrinking (market-wise) and with all the lawsuits and stuff, they are bleeding money and AMD might have a chance to really catch up. They may pay for their arrogance in the last few years.
2) NVidia know they're so far ahead of the competition that they feel comfortable ridiculing them during their time on the spotlight. No matter how wrong other things go, their technology is great and there's no chance of AMD catching up.
I for one think the truth is somewhere in the middle. Intel was seen as farther ahead of AMD on the CPU front than NVidia is on the GPU front, and AMD managed to somehow pull the carpet under Intel's feet. And now they're feeling the pressure while AMD is raking in that sweet sweet money Ryzen brings. I'm not holding my breath, but I wouldn't be too surprised if a similar thing happened with NVidia down the line. For now, Radeon VII is a bit underwhelming, but only when viewed from an improvement over Vega standpoint (or a power consumtion standpoint, I will assume). The performance, if AMD's testing is to be believed, is nice and I will probably be buying one, just because I want that level of performance, don't care about power draw and don't want to buy NVidia out of principle.