Lots of losses aren't deductible, there is no a-priori reason to assume bitcoin losses would be. You can lobby to have tax treatment of cryptocurrency changed,

Lots of losses aren't deductible, there is no a-priori reason to assume bitcoin losses would be. You can lobby to have tax treatment of cryptocurrency changed, of course, but you are still bound by the law(s) under which you are tax resident. And they all have weird corners.