He thinks Wikipedia is biased because it describes (correctly) that "alternative medicine" is bullshit? And also he is a climate change denier? Why is he not complaining that there is bias against the flat earth people on wikipedia? Sorry, "scientific minorities". This article proves nothing other than the author is useless.
I read the article and I must have missed where it's stated that he is a climate denier or that alternative medicine is or is not bullshit. Those are just two of several examples where he tries to show the lack of neutrality.