i definitively agree that many hk people just don't care. the key main reason in my view is simply because they never had it before.
if you look at the progress of democracy around the world, then usually once people have it, they will want to keep it and build on it. very seldom people will accept to return to old ways.
actually i think hk people are very clever and would do well under a fully elected legco and leaders. the reason weirdo's like long hair can get elected is because certain segments of the population feel so disenfranchised that they vote of radical elements. same thing happens in other democracies (e.g. the left party in eastern europe, right-wing nationalists in several european countries, etc.).