Agreed. In the US, at least treat it the same as any other foreign currency in which there is no tax for any purchases under $200. Unfortunately our legislators don't understand the first thing about bitcoin or cryptocurrency.
It seems to me that the US authorities understand cryptocurrencies very well, but that such laws are in place to deter people from using Bitcoin as a means of payment, and the impression is that this affects most of those who would otherwise have such intentions. I might expect a misunderstanding from a third-world country ruled by a dictator, but I would not agree that politicians and institutions are more intelligent in El Salvador than in the US.