The way this sounds is that you are more concerned about politics as in people who take party positions and may feel excluded as a group when the majority of the community takes a different position. This is a slightly different issue i.e. party politics, and I think it is fine/a good thing, but it is also important to distinguish the two. This should essentially be under the same umbrella as personal attacks, as they are essentially the same thing.
I'd rather see HN go politics-free forever. Political discussions do not enjoy the same level of objectivity that technical and business discussions do. Frankly, it may be impossible to expect objectivity within political discussion because our political feelings are so deeply-held and tied to our individual upbringings, culture, and locale.
Unless HN can figure out how to give fair treatment to minority opinions, it's best to exclude these discussions entirely.
When people talk about "the average HN reader", or the "prevailing slant", I'm always curious what they mean.
For me, it's always felt more like a back-and-forth struggle between radical liberals and hardline libertarians. That's always been the general nature of pretty much every tech-oriented forum historically (e.g. HN, Reddit, Slashdot, Usenet, etc). When Mike Judge was once asked about the core insight behind his "Silicon Valley" TV show, he cited his belief that the tech ethos is a conflict between liberal and libertarian values.
As a pragmatist who just likes to read about tech, I find both sides annoying.