I generally agree with your appraisal here, but it is worth it to note that although those sorts of comments are usually pushed to the bottom of the discussion, they are almost always there on every thread where these sorts of issues are raised. I don't think it's a stretch to assume that a significant portion of the tech worlds holds those sorts of beliefs; there are probably even more people who would post things like that, but don't because they know they'll just get downvoted.