To be clear: I do not have the time or energy to back this up statistically, but my experience is that you are substantially more likely to choose to get involved in threads/comments that challenge startup culture than you are in threads/comments that embrace bigotry, conspiracy theories, and other genuinely appalling content.
Edit: To elaborate a bit and put a final touch on this before I call it a night, the problem isn't that I see you condemning comments like this; it's that I rarely-to-never see you condemning substantially worse comments. It seems to communicate a clear choice to allow repugnant behavior as long as it doesn't criticize startup culture/founder worship.