It seems essentially wrong to anthropomorphize LLMs as having instincts or not. What they have is training, and there's currently no widely accepted test for determining whether a "fair" evaluation from an LLM stems from biases during training.
(It should be clear that humans don't need to be unpolitical; what they need to be is accountable. Wikipedia appears to be at least passably competent at making its human editors accountable to each other.)
About Wikipedia, there is obvious bias and cliques there as has been discussed in this thread and HN for many years, not to mention the its bias is reason that Grokipedia came about in the first place.