It is enough just to say I completely disagree or do i have to substantiate?
It's never enough. :3
I think that the reason to tone down AA on a 2x scale comes from the exact reasoning behind AA in the first place. AA is supposed to act as a sort of half pixel, and it accomplishes this through an intermediate tone which blends two tones. Alright, so if the half pixel was doubled in size it would theoretically be the size of a whole pixel, correct? from there, I would reason that, in order to once again hide the AA pixel and better smooth the intended shades, the AA pixel should be reduced to a state of even less opacity, or less contrast.
images aren't more clear at 2x because of contrast, etc. - they are more clear because they are say, 2 inches wide instead of 1.
Yes, exactly. The size makes up for the contrast. Bigger groups of pixels are more dominant than smaller ones. Common sense will tell you that. I really never would have even thought this was important to think over, let alone say out loud, if I hadn't seen
this topic.
Taking Sokota's heads...

He even admitted to working at a higher res which enabled his contrast to drop, while what he was seeing during their creation was in fact pretty concise. At 1x I can't make out one group of pixels from the next. At 2x I can. At an even higher res, I can very clearly see it.
However, the reason I think that the discussion of changing styles is off-base is that any piece which looks great with all the pixels showing will still look great at 1x unless you're on a CRT monitor (and who uses those nowadays?).
Sure, pixel art at any zoom looks great if it's made well. That goes without saying, the closer you get to a painting the more you can admire the strokes. But that's beside the point, as Mathias' pixels are meant for 2x, and 2x only. And there are certain things which work at 1x which don't work at 2x because the building element is different. The AA, which used to take up a sub pixel area now takes up twice as much room, and should be adjusted accordingly. The dithering, which relied on a mesh of tones now looks noisy in comparison.
I believe that less potent AA and a decrease in contrast (because it is made up for by the increase in pixel size)
is a style. It's a style used towards the end of tailoring 2x2 pixel building blocks for viewing while making the most out of the pixels. In other words, it's compensating for the increase in size with a decrease in other aspects of the art.