We don't need unanimity. We don't have to agree on every issue.
But we do have incredible power, because we're the ones who know how to build things and make them work. Those who would do evil depend on us to do our part.
I won't participate. I will deploy my talents and money against wars of choice, the police state and institutional theft.
We may not all agree, but the HN community is disproportionately interested in these issues, and has the ability to do something about them.
Its the bane and blessing of all social groups. As they get larger, people get exposed to / interact with lots of viewpoints that might not have originally been part of the core. To some level this is good, as it broadens horizons and enhances discussion. At the extreme, it all becomes bland, vaguely funny photos of animals (mostly cats).
Its why community generated sub-forums / sub-reddits are kind of genius / kind of crap, as they let folks go off and sub-fracture as far as they want until the discussion matches whatever their internal worldview is. Of course, then nothing challenges their internal worldview.
Real Life Democracy forces you to work with your political opponents. Website Democracy forces everyone to think the same, or leave.
If that were true then arguments on the Internet would be rare.
For example, you've got Huffington Post vs Dredge Report. If you've ever visited the "conservative side" of the internet, you'd recognize it as totally night-and-day compared to the side that us (typically) liberal technocrats view.
The problem is that "the HN community" doesn't have unified beliefs about nearly anything. There are people who are violently for and against: higher taxes, lower taxes, affirmative action, race-neutrality, abortion choice, life, fracking, nuclear power, wind power, birds, etc. If we declared that we couldn't work together despite differing views we'd quickly find that we're each an island. There is no single "hacker news" political view. We are comprised of atheists, baptists, catholics, jews, muslims, sikhs, janes, buddhists, and nearly every other group you can think of. Some are rich, poor, and in the middle. Old young and retired. You are free to use your money however you want, but it is not the "HN community" view.