Whether a song is uplifting or not is completely subjective. Intelligence has nothing to do with it… Sometimes even a perfect expression of despair in a song can be uplifting to the listener, for many reasons.
Whenever I’ve been at my lowest, for ex, the various versions of Dylan’s "Not Dark Yet" have always been a source of comfort.
Is it the embargo that prohibits fishermen in Cuba from fishing, farmers from harvesting, cubans from freely doing business? Is it also responsible for cubans getting beaten and imprisoned for thinking differently? Was it the embargo that destroyed every sugar mill in the country, textile factory, shoe factory, you name it?… The dictatorship is the one responsible for all these things.