I think the author meant (but is I agree not saying it clearly in those quotes) that while good-faith arguments are rare, there's a misconception they can only

I think the author meant (but is I agree not saying it clearly in those quotes) that while good-faith arguments are rare, there's a misconception they can only happen in close-knit communities, but in fact if one party, you the reader, engages using the methods I discuss here, you can create many good-faith arguments on the general internet, not just in close-knit communities.