This is what I call a cogent, measured and robust rebuttal to several opposing viewpoints. I don't have much to add as a response of my own on the specifics but just want to mention that what your comment tacitly points out repeatedly is very common in the comments on this site, for many subjects and especially those that seem to provoke a certain popular hive-mind response:

People writing completely half-baked, often deeply ignorant opinions on complex, nuanced subjects out of mostly emotional disdain, but phrasing their responses in such a way as to easily fool someone who doesn't know said subject well that they at all know what they're talking about and are thus arguing rationally.