It's fairly obvious to anybody outside the dominant culture. There are many articles if you bother searching. Here's a quote from just one:

Wikipedia materialized through predominantly westernized cisgender male voices, opinions, and biases. The awareness in the community, at that time, illustrated a rather singular point-of-view and developed policies and practices accordingly. This foundation is difficult to break. Preference on Wikipedia concerning changes or inclusion is still very singular and causes diverse participants to have work within the dominant culture... This narrow and inflexible behavior functions within the Wikipedia community to oppress and exclude. Simply because experience and history have been traditionally told from a white, cisgender male perspective, these voices and perspectives within society are taken as fact when often they are opinions or interpretations. We all experience life from our lived experiences; the Wikipedia community is no different. By infusing homogeneous points-of-view into policies and practices of a community, a disservice is being done. Content and people are being removed and excluded if they do not fit the policies and practices designed by the existing cohort of contributors. - https://wikipedia20.mitpress.mit.edu/pub/u5vsaip5