I doubt the Nordic working class are receiving a meaningful share of the value stolen through imperialist means. Instead, I think the Nordic bourgeoisie are able to accumulate wealth without having to hyper exploit their local populations thanks to imperialism. This ameliorates the local class antagonisms and creates the superficial appearance that a capitalist system can maintain a stable high standard of living for the working class.
Of course, if imperialist exploitation can no longer ameliorate said antagonisms, class conflict will re-erupt in Nordic countries. The danger here is that parts of the working class may be convinced that their standard of living is predicated on imperialist conquest which is the basis for fascism. The good thing is I don’t actually think that’s true. A more reliable way for Nordic workers to maintain their standard of living would be for them to suppress the interests of their local bourgeoisie and transition to an actually socialist model.