The other argument is that a repro of a popular game could be sold off to someone who knows nothing about games and thinking he/she has an original. At some point he/she decides to sell it and lists it as an original. At that point either prices are going forced to fluctuate to accommodate the extra copies of whatever now being dumped into the market place (which happens anyway), someone is getting ripped off (dubiously) or both.
It seems like a lot of worrying for nothing. Or, rather, a lot of propaganda for the purposes of controlling the market. I fully expect to someday see an individual or group pop up and start selling obvious repros of popular games for people who just want to play the game on a physical system or have something nice to put on a shelve.