Truth
But even with this lower hype, AMD has always had trouble keeping supply of their larger cards. You can partially blame one-year shortages of the 290X on miners,
but AMD's low production targets was also to-blame (they had already seen what happens when you give the HD 5850 to coin miners for $270...it disappears from retail shelves for nearly a year!) They would have known what such a low price card as the 290 would have done to demand (and should have ordered more.)
AMD's GPU prices have skyrocketed in recent days, thanks to huge demand from cryptocurrency miners -- but is this actually a good thing for AMD customers?
www.extremetech.com
The Fury X also suffered from six months of poor availability,
Vega 64 (just a die shrink of the Fury X) was also impossible to find at anywhere near MSRP for its first year...even though the Etherium market crashed just 3 months into the thing's intro.
AMD has never been able to meet the demand for their big boards, and that has always been why NVIDIA massively outsells them in the high-end.
My guess: they didn't want to get stuck with excesses Vega 64 mining stock, like Nvidia did with Pascal...but if you can't take risks, you don't sell enough to make a dent in consumer mind-share.
You don't encourage new buyers when your last four cards were impossible to find...they will not wait.