The devious reason would be to trade shares for the sake of converting them to phyzz. Giving them a nice way to cover any shortages or to continue to short by dumping it on the market.
I’d love to believe this is inside info they have for a dollar backing with silver. In some ways, silver makes more sense than gold as a currency backer, at least Kennedy thought so.
Whatever reason Blackrock has for doing this is most likely not good for us. When have they ever helped?