I just glanced at several of the headings, and it looks like that page is just a list of reasonable things to say.
I think that either mburshteyn is sarcastically saying "that's the point" (perhaps to indicate that you thinking that is exactly the problem s/he is trying to highlight?), or mburshteyn has missed the sarcasm in the derailment page (it's not actually advocating 'derailment').