Allow me to comment about conspiracy theories in general, and as related to 'colloidal silver' specifically. Do postings to social media about CS quickly disappear? Apparently so!
But are those removing these conspirators? Probably not. I would bet that they are told by someone who is also not a conspirator that the content is irresponsible or inflammatory and needs to be removed. Higher up in the food chain are probably those with the mistaken impression that interventions against the virus could only be what is expensive and requires lengthy development; plus it must be allopathic. That remedies would be inexpensive, costing pennies is anathema to those intent on making a lot of money and building a wealthy society. Once claims are made of a curative that resists being resisted... that's broad spectrum, an immediate and visceral response, however quiet, comes from the profit mongers. Maybe blame this on the free-enterprise model, the pragmatic approach that allows of necessity for profiteers and predators. Apologies that I'm telling people here what many already know, no doubt. It's just that too many here seem to feel as if there are big and highly organized conspiracies.
