Maxing texture quality has very little impact on performance - that is if you have enough VRAM to support it. Otherwise it is chopfest.
Jaskalas post didn't specify maxing texture quality, it just said max settings, and in that case shading performance will be just as big of a bottleneck as VRAM 2-4 years from now (if not more so).
The VRAM limits will be more an issue though. History has shown us this with these PR edition cards which look good short term but over time don't do so good. Examples include:
1.)8800GTS 320MB vs 8800GTS 640MB
2.)8800GT 256MB vs 8800GT 512MB
3.)GTX460 768MB vs GTX460 1GB
4.)HD6950 1GB vs HD6950 2GB
5.)HD7850 1GB vs HD7850 2GB
There might be a few others I missed,but people should get the gist.
This is why Digital Foundry and Guru3D said to just buy the GTX1060 6GB instead.
With the exception of the GTX 460, all of the mentioned cards have double the VRAM. The competition for the 1060 3GB is the RX 470 with 4GB of VRAM, so quite a different scenario. And as far as the GTX 460 goes, the two versions didn't just differ in VRAM amount, they also had different ROP count and bandwidth, so again not really comparable.
The 6GB 1060 and the 8GB 480 will of course be more future proof, but those cards are also in completely different pricing tiers, and it should be obvious for everyone on this forum that moving up in tiers will provide more future proofing since that is the way it has always been, so that is just stating the obvious. The real question is if the direct competition (the RX 470) will be more future proof, since that is the alternative 1060 3GB costumers would actually be looking at.
Well... at reduced settings. Here is what happens when you increase textures:
https://youtu.be/y1RWItff0eQ?t=315
30% slower than 6gb 1060
20% slower than 470 4gb
You mean that's what happens in a single scene out of three.
The final results for the benchmark was 63.7 FPS for the 1060 3GB and 62.2 FPS for the RX 470 (based on last average FPS numbers seen in the video), or in other words the 1060 3GB was 2.4% faster on average.
The benchmark ran for a total of 1 minute and 19 seconds (based on the video), and the high VRAM scene lasted for 24 seconds. So if the the 1060 3GB was 16% faster overall and 20% slower in that scene, it must have been 9.5% faster in the other two scenes.
So the choice is then 20% slower in one scene (or inversely 25% faster from the perspective of the RX 470) vs. 9.5% faster in the other two scenes (or inversely 8.6% slower from the perspective of the RX 470). Which one is preferable would depend upon the kind of FPS you are seeing, but at a glance I wouldn't personally be able to say which is preferable.
Edit: I edited to use the correct number for very high textures.
The same priced RX 470 4GB can play this game easily at those settings. So if GTX 1060 3GB cannot, it should be priced at $150.
The RX 470 actually loses by more than 20% in the other two scenes (edit: only 8.6% with the correct numbers), and thus has a harder overall time playing this game, so I guess by your logic it should actually be priced at $100 or something equally silly then.
Edit: I used the wrong numbers (see above edits)