Silver / Gold prices are set at the paper market (yes, its set at COMEX / LME price .... but 95+% of those people are trading paper contracts). This creates a perverse situation where physical purchases have a premium attached, but sales are sold at spot. For example right now price of AG is $28.15 but buying a 1oz Silver Eagle is going for $35.50 (a 25% premium). This gap between buying premium / selling at spot is caused by paper market distortion.

If even 20% of Gold/Silver buyers took physical delivery, it would rekt their scheme....but people dont take physical delivery....because big heavy rocks

BTC is going to be less susceptible to these schemes because its so easy to take physical delivery.