It's still alive and well in Washington State. It's sporadically used, mostly by gas stations and small stores when you use a credit card they will add a 50 cent fee or charge an extra dime a gallon for gas, things like that.

It is also convenient for the vendor. Checks are a major hassle, check fraud apparently still a thing and cash comes with additional security implications. Don't let the vendor tell you that CC fees reduce their margin!

Because the member states of the EU, and countries in general, want a paper trail. This reduces lost taxes due to underreporting.

As such it would be foolish to allow shops to deincentivise that