They could easily correct their marketing approach by clearly stating that the only people who need this are 5k or extreme surround users. I've seen them be very sneaky about who and what this is actually useful for, while seeming to be more than glad to sell it to everyone who is confused. Tom very much tried to appeal to 980ti SLI users at 4K resolutions that this would be neccessary for that purpose with 10 series, and the 980ti had been gimped into microstutter because the old bridges could not be used at all.
The fact that the only metric we have to show improved performance is an extreme case surround setup means a lot to me. They would have shown a straight 4K comparison if they wanted to be forthcoming with users.