First of all, it is necessary to distinguish between simple legalization, that is, an agreement not to prohibit cryptocurrency from being recognized as legal tender. El Salvador was the first in the world not only to legalize (this was done by dozens of countries before it), but to recognize bitcoin as legal tender. This means, for example, that stores not only can, but are obliged to accept it as payment. Or if someone harms someone, then he can pay with just bitcoins, and the victim cannot refuse to accept such compensation.