Earlier quoted context omitted.
“We must take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor, never the tormented.” -Elie Wiesel Choosing to not discuss politics is fine. But if you do that, you’re making a choice: you’re choosing to take the side of those who prefer political decisions to be made by a small elite, without feedback from people like us. You’re choosing not to weigh in.
I feel like I'm more tormented by people demanding I take "a side" which is invariably their side. God help me if I choose to disagree. Besides, we live in a Democratic Republic and it's my representatives making the decisions, not me. That's literally by design. My only real feedback is casting a single vote when it's the right time.
People who are criticizing Basecamp want their politics in workplace. Every single one of them knows they won't be in the minority. They won't have to be one of the few opposing voices in a sea of anti-abortion, pro-gun-rights, anti-gay-marriage, anti-immigration coworkers.