yes, if you actually sell inside 12 months, but defaulting to FIFO is likely way worse. .5 BTC purchased at $15k/sold at $100k - long-term gain tax $8500. Purchased at $65k/sold at $100k short term gain tax $6125 (for example). More importantly, all those old UTXO that you don't sell will step up basis when you pass them on 😉