But if you define truths in that rather narrow axiomatic way then there doesn't seem to be much to stop people from saying "from our point of view $countertruth

But if you define truths in that rather narrow axiomatic way then there doesn't seem to be much to stop people from saying "from our point of view $countertruth is true." Which is surely what his point about dark side epistemology was raising? It just seems a kind of odd thing to bring up in the context of the essay.