I have this issue talking to people on HN all the time. Fundamentally it boils down to this: The people making mid six digits or higher don't want to share exactly how much they make because there is very little upside, and people vote based on their own perspective of "what's true" which slants towards average.
The other thing that I don't like is the money-worship around here. I don't want someone else to feel bad that they're "only" making $120k a year. I want more people to help their communities and get involved with our democracies to help craft better legislation to protect ourselves from an ever more technological world. It really, really doesn't matter what type of car you drive.
But I've noticed something over the years: The people that go out of their way to give back never hurt for money. Doesn't work both ways (I know plenty of wealthy people that are self-centred) but if you give back it's a happier, more fulfilled life and as a side bonus you get a lot of intros with great upside.