What we can do as a community is express our support. These folks are a vocal minority. The vast majority here appreciate what you are doing and value what we are learning from your posts. We should not hesitate to convey our positive feedback.
The other thing we can do is help police the feed. When someone is out of line, it should not be exclusively up to the poster. Call them out. Block them. Treat these feeds as a shared resource and help defend their integrity.
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