That just looks like a circulation definition, to me. It can’t be argued, so I won’t.
This seems to be an argument by appeal to extremes, which is also shaky IMO. The only way your objection makes sense is if, in fact, only one Titan Xp gets sold, or, if, in fact, the pricing results in some unfavorable position in the supply/demand curve. I don’t see how you could know either one of those.
This product, being introduced at exactly the same price point as the product it replaced, does not seem like it could be an example of that. It introduces more functionality/capability at the same price point. There is no day by day evolution in pricing here, from what I can tell.
Even if we survey the extreme graphics space, there have existed entries in this space at the $1000 price level at least since the original titan introduction which was approximately 4 years now (and arguably some dual-GPU products in this space are older than 4 years at the $999 pricepoint). The only evolution here has been (at most) from $1000 to $1200.
I believe we can find many examples in other product areas where prices for the high-end offering have increased 20% in 4-5 years.