Gold bugPeter Schiff took a dig at the downturn in Bitcoin (CRYPTO: BTC) exchange-traded funds (ETFs), noting that all spot Bitcoin ETFs have entered a bear market – a term used when there’s a drop of 20% or more from their peak values. What Happened: In a tweet posted on X, Schiff said, “All the spot #BitcoinETFs are now in bear markets, defined as a drop of 20% or more from the peak.” Schiff drew attention to the $FBTC fund, which has declined by 32%, and suggested that the Vaneck Bitcoin Trust, currently using the symbol $HODL, might consider changing to GTFO. Gtfo is an internet slang acro…