Yeah the millions who take it (me being one of them) clearly know that Argyria is real and not impossible to get. Being educated is key and not making outrageous claims like "Argyria is almost impossible to get". This could drive someone new to Colloidal Silver into danger.
Even if we have silver receptors in our body (which I have no idea if we do or dont) doesn't mean that our bodies were made to have the amount of silver we are putting into us. The amount we put in clearly doesn't belong though it has benefits.