That's a likely motivation, but it's worth pointing out that it's against one of the HN community's other values: thinking things through properly, not just picking an option.

The hacker mindset values understanding how the moving parts fit together, and thinking about whether better strategies than the "received wisdom" exist. Politics is often a demand to pick a side, which is against that, but "we just don't do politically contraversial subjects here" is even more against that.