In the Wikipedia article of Freddie Mercury[1], we read:
"[Mercury] was a 'scene-queen,' not afraid to publicly express his gayness, but unwilling to analyse or justify his 'lifestyle' ... It was as if Freddie Mercury was saying to the world, 'I am what I am. So what?' And that in itself for some was a statement." In an article for AfterElton, Robert Urban stated: "Mercury did not ally himself to 'political outness,' or to GLBT causes."
But what does that line mean? A statement of what? Could you also please tell me what does "causes" mean in this context? I looked up a dictionary, but didn't find an appropriate meaning, except "social goal" or "purpose". Thank you.
[1] https://en.wikipedia.org/wiki/Freddie_Mercury#Sexual_orientation