Some dude on reddit sold btc in December for ~$100k profit. Bought random coins in January and lost almost all of it. Is looking at a $30k tax bill. Can’t offse

Some dude on reddit sold btc in December for ~$100k profit. Bought random coins in January and lost almost all of it. Is looking at a $30k tax bill. Can’t offset the loss because he crossed a year boundary between the transactions. His annual income was only something like $35k.