Well, just to be fair, in the postwar era, $20-30 for a surplus rifle, scope or sporting sights and labor as opposed to several years' wait for a Model 70 (or, if it was available, a LOT more money), was a pretty easy decision. Many men of that generation were 110% convinced that all foreign military rifles were junk, and with some work might be made into a passable (and therefore useful) hunting rifle. You still run across elderly men at gun shows that insist that "all them old Jap rifles got cast recievers and'll blow up on you", and that might explain why Ariskas have showing up in recent years in relatively unmolested condition; "Papaw" brought an old Army gun back from the Pacific and to him it was just a memento of WW2; he never shot it because, in all probability, he didn't think it was safe to shoot. And to the grandchildren, it's just an old Army gun. Mausers, on the other hand, were seen as a second-rate 1903 and were converted into hunting rifles in all sorts of calibers at a now-alarming rate.
This is why SAAMI and the American sporting firearms industry supported the Gun Control Act of 1968. Remchester saw mail order military guns as COMPETITION.