Possibly, although Turing's chip shouldn't have too big an affect on Ampere.
Still, I think the shortage being mostly due to miners stories don't tell the whole story.
Something doesn't add up:
- 8+ million plus next gen consoles sold (estimated as around 80% of AMD's TSMC wafers), but continuous shortages. (Incidentally, those wafers could have yielded close to 50 million Zen3 CCDs at a far greater profit.)
- 3000 series card showing up on Steam, but continuous shortages.
- Nvidia record revenue and profit.
- RDNA2 despite being worse for mining (AMD's and Nvidia's position have reversed since previous gens), it has even greater shortages (some of which is of course due to the consoles using up all the wafers despite being AMD's least profitable use of wafers).
Mining certainly isn't helping but the demand is crazy.
Obviously aside from a flood of used cards, Nvidia don't care who they sell to but from a PR point of view blaming miners for their own shortages is convenient.
Miners are hardly long-term buyers while gamers tend to be repeat buyers and are far more likely to listen the PR spin.
If AMD wasn't constrained by TSMC, I suspect Nvidia would be far more worried as having the better mining card in a mining boom isn't good for marketshare figures.