There will come a time when the market is full of externally indistinguishable fakes, and when most owners will be reluctant to actually shoot (and break) them and may never know they paid full price for a copy.
We could be only 50 years or less from the tipping point.
It will just take one generation gap for some well meaning, technically minded writer to attempt to supersede Peter's work, disassemble a fake and unwittingly document it as genuine design. Once that happens the fraud will gradually become accepted as some bastard or "prototype" genuine article.
Having a book published with a glaring error happens on occasion, but there is little editorial oversight on the internet and it's current proliferation of free information and advice.
One of the few redeeming factors currently is these fake scopes look "new" in very good condition, once they age get knocked about and patina only the sharpest will catch the frauds. Take for example Civil War militaria, it's a hotbed of fakes, and old enough that even fakes are can be well aged. I am glad that I don't collect in that market, too high risk.