I came here because this "news article" was lampooned by a YouTube channel I watch. It did not disappoint.
Though to respond to the argument, especially using "Nvidia's own numbers" (helpfully debunked by Adored TV, who do great tech analysis btw) The benefits of owning the fastest graphics card in the world are bragging rights and better fps. In that order.
That said, as a man who owns a 1080ti, (engine limited, nothing I buy will make my game, [Skyrim] go much faster, 5% maybe, and will cost me $1500 just to stand still on more modern hardware.) I feel no compunction to pay for a 2080ti. "ooh shiny" yeah sure. but ray tracing isn't going to work on any game I have, and at it's heart, ray tracing is shadows, sure you get reflections, but we can do global illumination, volumetrics and caustics already, we've had them for years. Shadows however, shadows are hard. Good shadows harder and more computationally expensive. It's why we turn shadows off when we want better fps.
I suppose I can reasonably expect another 13-25% better performance, though how that helps me at 1080p where in any other game I get 60fps solid, I don't know. Hell I got 60fps in Witcher 3 with my R9 390, I only bought the 1080ti to take the card out of the equation. Because if you buy the fastest GPU in the world then you don't have to worry about whether the card is at fault. Every 1080ti is the same within 5% or so, only the cooling solutions differ.
Personally, given the glut of cards left over from mining, it makes more sense to me to to actually buy the 1080ti now, especially at anything like $500, and wait for the 2080ti to get cheaper. By the time the gaming landscape has moved on, then like the LCD screen, you too will be able to buy the 2080 on ebay.
Let's face it, ray tracing is only going to work with a small number of games, by which I mean a few genre's of game, mostly fully rendered 3D worlds. I don't need a ray traced muzzle flash when a cheap spirite will do. I god of the drop ship and shot the rock and marvelled at the bump map on the rock in the original Halo. That was a long time ago. Decent graphics are now table stakes, but only for a handful of AAA games, and those seem to be going the way of all flesh at present.
This is rarefied air we're breathing, at least as compared to the steam hardware survey. A few people will "just buy it" I go to coffee with two of them, they play pubg. for everyone else they'd be better off buying a cheaper 1070(ti) IMO
Good click bait though.