Right, if someone were trying to use this information to, say, cut down on their news.yc surfing, they'd probably be better off not worrying about dopamine and just focusing on the actual net-addiction behaviors and feelings they are actually experiencing.

Thinking "I should do X, because the dopamine levels in my brain are changing" is probably going to be less effective and more ambiguous to you compared to thinking "When I click a link on news.yc I feel X, when I tell myself maybe I should stop ycing and work on something else I feel y, so maybe I could try z".