What? That doesn't even make any sense. You can sell the bitcoin for USD then pay your taxes. Just like you can't pay your taxes with 1 billion dollars worth of Facebook stock or gold.
The argument you are looking for is: "USD has value BECAUSE the state makes you pay your taxes in it."
Notice that that argument does not end with, "and this is the only way a commodity or currency can have value." Because there are different reasons that different things have value and more than one thing has value.
Your comment is intellectually lazy and you don't have to believe in crypto to come to this conclusion.