Sounds good, but what happens when everyone else uses ideological purity filters too?

Because if what this guy is saying is reasonable, then it immediately follows that it's also reasonable for every ideology and religion to exclude the ones they don't like. For example: how does an antisimetic software license strike you? Because that would be a perfectly reasonable license for some people to enact, and fully justified by this article's logic.

Do unto others, and all that.