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.
My wife and I, on several occasions each day, will say to one another, "we're describing two different things. We need to take this discussion far deeper, or end it altogether." That's the person with whom I talk more than any other person, and we aren't on the same page on divisive issues tens of times each week.
Without unpacking an issue to a level far beyond the length of forum posts, we cannot possibly hope to be on the same page in our discussions here when they veer into politics. It's better to favor the format of discussing interesting issues about which most of us are unfamiliar. That way, we get fresh eyes thinking about the issue, more polite discourse, and a more educational experience.