I don't understand how you can be "anti-globalist" and "pro free trade", aren't those two things opposite?
As for non-state parties, perhaps in part that depends on how one does or does not view organizations like the WTO (World Trade Organization) and is not a question I find very interesting to discuss on the internet as there is merit in both opinions and the basis for holding one or the other is typically externally rooted. I suppose it also might depend on one's view regarding the political legitimacy of anarchy and the economic legitimacy of black markets and similar points of order and those are also not questions I find particularly interesting to discuss on the internet for similar reasons.
Though I suppose participation and non-participation in black markets might be a minimal viable example of free trade as local and limited decision.
I wouldn't go so far as to say I agree with the assessment that Heart of Darkness can't be a great work because of its flaws, but I think it answers some of the questions the author of this piece claims to be puzzled about.