Maybe. I used to believe in your theory but when I see the huge interest in (especially Finnish) Mosin-Nagants south of the border (for example:
http://forums.gunboards.com/forumdisplay.php?3-The-Collector-s-Forum-Mosin-Nagant-HQ) I wonder if there isn't more to it. A lot of the American collectors are very far from being beginners. Being attracted to the accuracy of the Finns as opposed to the other M-Ns makes sense, plus the compelling "David and Goliath" myth of the Finland vs Russia wars. And then there is the fact that all Finns are parts guns, which leads to an incredibly complicated world of various metal stampings and stock markings, which is only surpassed by the Lee-Enfield complex. That leads to endless collectibility.
I notice the long established Sako collectors forum has just opened a new sub-forum to deal specifically with Sako assembled Finnish Mosin-Nagant military rifles.
By the way, I agree with you on the M28/30...A couple of decades back, I had a real nice one with an excellent bore and wish I still had it.