As a digital nomad myself, my view is that countries who are creating 'digital nomad visas' are doing so more for marketing purposes than anything.

Digital nomads tend to be, well, nomadic. Spending an entire year in a single country is pretty much the opposite of nomading. The only exception IME are Schengen Days. We always have to keep careful track of those while nomading in Europe in the spring/summer/fall. But that's for an entire continent, not for a single country.

But it IS clever marketing to say 'hey, we are a digital nomad friendly country - come check us out instead of going back to Thailand or Bali or Bulgaria or Mexico or Colombia!'

And they DO attract what I'll call 'temporary digital expats.' That is, people attracted by the notion of geoarbitraging for a year in a single place.

IME, countries are always keen to have visitors who have $€£. Digital visas typically come with an income requirement and a promise not to be a burden to the local social services. That's a win-win.