I think the ingredients are high polarization, beliefs trumping facts, and at least one person actively caring a *lot* for one pole, and one or more people caring some for the other

case in point: https://en.wikipedia.org/wiki/Talk:Linux_kernel

there's this person over there, who denies the presence of binary blobs in Linux despite all the evidence, with an argument that seems sound, but that rests on a false premise: that the presence of blobs in the otherwise-source tree would amount to copyright infringement

https://en.wikipedia.org/wiki/Talk:Linux is another interesting example of active defense of a biased neutrality