The article seems to state that Nvidia claimed this literally more than a year ago.
I would say it's quite funny to hit back an entire year later.
They say that Radeon covers more than Intel and Nvidia combined, but why does that matter when Intel's marketshare is so small on the GPU front?
If Nvidia really does have 66% of the PC market and 16 million Switch units as well as however many Nvidia consoles were sold then it's only a matter of time till this supposed gap decreases. I guess it depends actually how much gaming platforms there are for PC, and also if cryptomining pcs using gaming-marketed count as such.
Actually, why does it even matter? Being the #1 Gaming Platform doesn't have to do inherently with popularity. It can mean many things. And besides the gap is probably considerably small, if any.