It's funny that the (seemingly) right leaning people in this thread are criticizing the EFF for leaving Twitter while also simultaneously saying they will leave HN for the exact same reason, just "on the opposite side of the political spectrum".
Not in this instance. People don't stop being people when they join an organization. If we can recognize that getting ignored, suppressed, or met with hostility "discourages people from posting", why can't we recognize that it can also discourage organizations from posting?
You don’t think people have different goals than organizations?
Do you think the goal of EFF posting on HN is the same as some random user posting on HN?
Of course not. So it’s not surprising they have different actions under similar circumstances. Nor is having different actions indicative of differing morals.