NL is a short for The Netherlands while Dutch is a person who lives in this country
its like UK for United Kingdom and British for a citizen of this country.
btw its cool that you published two articles about oldschool techno artists. one more trance/edm and another, Joris Voorn, true legend of a bit softer and beauty side of techno. its a good balance for my mad stuff. next week I will try to publish something about another UK dinosaur of wild hard acid techno - Bad Boy Pete.
for balancing a bit Dutch legends of techno scene, please check my old article about Speedy J