No it doesn't, it's a model DTT between two countries. See the very start of the document:
"Convention between (State A) and (State B) for the elimination of double taxation with respect to taxes on..."
Article 4 is the model's︀ suggestion for how to determine residency between the two countries. First a) Permanent home or︁ centre of vital interest, then if that cant be determined it's b) habitual abode, and︂ if even that cant be determined, it's c) if the person is citizen in any︃ of the two countries, that will be deemed the country of residency. If the person︄ is a citizen of both or neither country, next step is d) "the competent authorities︅ of the Contracting States shall settle the question by mutual agreement." Basically, f-ck it, we︆ dont know, you sort it out!
But a DTT (or DTA) only comes into play︇ if more than one country claim you as tax resident, which would not happen if︈ you are a true digital nomad (not even one country). And even if two countries︉ claim you as tax resident, the above doesnt say you are a tax payer in︊ your country of citizenship, just that if it goes down to point c) for the︋ purposes of the DTT (if the two countries follow the OECD model convention which they︌ dont have to do) , you count as resident in the one of the two︍ countries where you are a citizen. That is, if you are a citizen of one︎ of the two countries that claim you as tax resident.
Let's say again you are️ a Danish citizen, and you have spent like half the year in Norway and half in Spain, and been doing business in both countries. Both countries claim you as tax resident, and permanent / habitual abode is hard to determine so it goes to point c) and nope, point c) cant be used because you are not a citizen of either country, so it goes to point d)