I didn't notice this, in fact, I still find Wikipedia to be remarkably neutral on controversial topics. It is very explicit about not being a news website, and yet, that's where I find the best coverage for hot topics like the war in Ukraine and Gaza, Black Lives Matter, protests in Hong-Kong, etc... For instance, most western media completely disregard the Russian side of the Ukraine war, not Wikipedia, where you have both points of views shown side by side, as well as international reactions, and most importantly, sources.

It is not perfect of course, small topics and non-English Wikipedias usually show more bias, and not just about controversial topics. Even on scientific articles, you may find some guy who considers himself the king of the Estonian Striped Beetle and will not tolerate any other ideas than his, driving away other contributors because they have better things to do than go to war to defend beetle truths.