As such arguing about Wikipedia's biases is a waste of time. For instance I see people in this thread who seem to argue that qualifying GamerGate as a harassment campaign is biased, personally I think it's a fairly accurate description of the movement. Am I wrong? Maybe, but good luck settling that. Ditto with, say, anything regarding the Venezuelan situation, Donald Trump etc... Look at the discussion thread for Wikipedia articles about subjects like astrology, homeopathy, climate change or the holocaust and you'll find people with fringe opinions accusing Wikipedia of bias.
I think the most important factor is not this absurd concept of neutrality, what matters is honesty. Are the authors deliberately trying to hide or misrepresent some of the facts in order to push a narrative? Are they genuinely trying to inform or do they have ulterior motives?
Clearly paying an editor to whitewash an article is not honest so that's a big problem for me.