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Not sure I'd agree with that, for us wedding photographers we are printing high iso images on large album spreads all the time. Last album I did had a ring shot from the ceremony, shot at iso 3200, printed across a double spread, 28" wide in total (was a 10X14" album, not the largest album size by far). Viewed far closer than a similar sized print would be on a wall. This is standard never mind the wall prints, etc.
In any case, now that I have a 5D3 and shooting it alongside my 5Dc, processing in ACR, 1.5 stop advantage at the luminance noise level, 3 stop at the colour noise level but more than that, iso 6400 (highest I've played with) is as malleable as iso 1600 on the 5Dc. You can push and play with the files and the colour, tonality and DR is still fine. You can't say that about iso 3200 on the 5D which falls apart if you look at it the wrong way and whose colours are all wrong.
What percentage of your ISO 3200+ shots are printed that large? And more specifically, what percentage where the subject doesn't fill the frame like a ring shot, where the extra resolution isn't needed.
Even half of that size, i.e. a single spread is still 14X10" printed at 300dpi. I would say that 50% plus of the pictures in an album are iso 1600 or higher. As for resolution, I believe that with this as well as the size thing you are trying to force your personal needs on the wider photographic community. Express it as an opinion not a fact.