While wikipedia is decent at giving overviews on some scientific and technical topics, but when there is a topic about something that is historical and/or any way politically or monetarily relevant there will be an edit war to change it to suit one interest groups wishes or anothers. It really is a cesspool of psyops, misinformation and articles to be basically corporate PR at certain topics, and that is just because google usually gives wikipedia articles as first or second result on any given subject and it's a really cost effective way to propagandize people and doing it is really low cost. Now Russia just monopolizes the propaganda inside their own borders.