Wikipedia, a generation ago, was considered controversial. It is now more accepted as a legitimate encyclopedia and the criticisms appear quaint when compared to the post-truth atmosphere of our current media. The footnotes and the "citation needed" annotations are meant to mimic a Wikipedia article.
The donate button is a nice touch, from a time when web sites weren't afraid to put links to external sites. Wikipedia probably doesn't need your money, but it is, in my opinion, a solid organization providing an incredible resource to humanity. Though, as with all human enterprises, it has its flaws.