Not stupid at all – this situation is rather confusing.
Grayscale has asked the SEC for permission to convert GBTC into an ETF. Assuming the SEC approves (the court last summer ordered the SEC to do so, which is what led us to today’s situation), then your investment will become an ETF. And in the process, Grayscale will lower the fee. And the conversion will not be a taxable event. So, all good!