They're saying that the volume of the silver market is such that "tiktok influencers" and their followers (i.e. "retail" traders, not institutional investors or mega corporations hedging their supply chain) are insignificant in affecting the price. This is not a situation like bankrupt Gamestop.
I'm seeing the 30% price drop, e.g., here: https://www.cmegroup.com/markets/metals/precious/silver.volu..., which shows a volume of 300k contracts, where each contract is 5,000 ounces of silver, for a notional value of more than $100 BILLION dollars. Now, that much money didn't necessarily change hands but tiktokers and their followers are not going to realistically move the needle there still.