Ehhh not quite. I've seen enough people who've been dying to have a GI JOE-sized Snake or just a small-ish Snake for years now. So I guess even with the size complaints here, I'd say there's a legitimate market for it...
And exactly what forum was this? . The people on SSF have wanted 1/6 MGS figures for the longest time. Also, I used to frequent the Playstation Underground up until a few years ago, and fans there were pretty excited about the scale of the PAK figures, as well as the price (when they were still cheap).
I've collected MGS figures for years, frequented the net for years - and maybe there are people who can appreciate this scale. But I've never seen a large group of MGS fans clamoring, "Omgz... give us the smallest possible MGS figures, Kojima-san, with an expensive price to boot!!" At least, not to the extent that you're describing.