The problem is that any "legitimate" use case is negated many times over by all the illegitimate ones. It would be like saying let's legitimise terrorism because sometimes the terrorists might (just might) be freedom fighters, when in actual fact terrorism on the whole does way more harm than it does good. In the opening example, sure some money may have got through to Ukraine via cryptocurrency (although some was st…
Also; Bitcoin isn't net negative for society and environment. Another blanket statement given without any form of evidence. Please note that the environment FUD has been refuted many, many times over.