It’s just another lie of the type these threads tend to be filled with nowadays.

Of course they aren’t buying “all copies”, and that wouldn’t even be possible in most cases since such books are usually flea market/attic material and most copies aren’t for sale (or even catalogued) to begin with.

I’d be interested to learn who comes up with such lies though. Is it really just random people venting their frustration, or some kind of organized astroturfing operation?