I frequently hear complains from people about individual Wikipedia pages but most of the people who complain only complain outside of Wikipedia. Wikipedia is inherently democratic. If you read a Wikipedia article and think it's very problematic, take five minutes and write about why it's problematic on the talk page of the article.
Wikipedia is an important part of the commons. If you think from an EA perspective those five minutes (or even more if it takes you time to search for sources) have a good chance of being time spent with a good EA return.
While recruiting people outside of Wikipedia to individual pages to engage in discussion goes against Wikipedia's rules, simply engaging on Wikipedia and voicing your opinion is helpful. It makes it more likely that consensus on the article shifts in the right direction.
There's no formal vote but if you have a page where two people have a long discussion of A vs B and a few other people take position A (and write a sensible comment - "I support A" might not be enough) but no additional person takes position B according to Wikipedia policy there's consensus for A.
Then when the page gets changed to A it's invalid for anybody to switch it to B. The lines around what counts as consensus are a bit fuzzy but in general that's the decision making process. If people don't agree on what consensus is conflicts can be escalated.