Aside from the blatant political bias, Wikipedia is a hornet's nest of intelligence pushing agendas.
[1] https://manhattan.institute/article/is-wikipedia-politically...
[1] https://manhattan.institute/article/is-wikipedia-politically...
Think about the results this way: if you inserted enough praise for Hitler into Wikipedia, their result would show Wikipedia as being more neutral. What does that say about their chosen method?
It shows a pretty clear bias. Just reading some of the articles confirms as such. Biden's son is credibly accused of peddling influence for cash with some of the proceeds going to his father and it's a 'conspiracy theory' (with citations from far left leaning papers and no counterbalance).
This is why one of Wikipedia's founders says it is ideologically biased.
Democrats were pro slavery if you go back far enough. Bias still exists back then.