This is FUD for clicks. Do you really think Coinbase Custody is allowing anybody to mess around with GBTC collateral?

Instead of buying into the FUD, you can buy GBTC at an equivalent bitcoin price of $9,000.

Keep in mind that at the last top GBTC was trading at a 40% premium to spot. So if you are willing to take the other side of this FUD you can get a leveraged return without the leverage.