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.
During my stint volunteering with the FLI, I worked on a project to improve Wikipedia's coverage of existential risk. I don't remember the ultimate outcome of the project, but we were up against an admin who "owned" many of those pages, and was hostile to many of FLI's views.
This article, at least by appearances, is an excellent account of the problems and biases of Wikipedia: https://prn.fm/wikipedia-rotten-core/
There are two things here. The first one is that I'm asking people to voice their opinion on talk pages which is a different category of action then making edits to Wikipedia articles directly.
If an EA organization wants to edit Wikipedia, understanding the relationship between the EA community overall and Wikipedia is something that's achieveable and that then allows predicting the related effects.