There could still be a subtle and subconscious influence of the times - if certain themes are present in society, they will work their way into the art, one way or another, because it's just what's on the artist's mind.
Not saying this is the case here, of course. I didn't pay any attention to the lyrics yet, so I just don't know. I'm just saying if the people around you keep talking about freedom, resistance, independence and whatnot for years, you will be thinking about freedom, resistance and independence a lot.