@theogrin @molly0xfff I just want to say as well for anyone inspired by this: YOU too can edit Wikipedia! There is no special bravery required, it is many thousands of ordinary people around the world maintaining it, day after day. I do it and I enjoy it, it can be very fun!
Molly actually has a guide called "Become a Wikipedian in 30 Minutes" that is a fantastic entry point for anyone who is curious about editing, but intimidated by the process of getting started. It is available both in text and video form: https://blog.mollywhite.net/become-a-wikipedian-transcript/
I always see many people advocate for donating money to the Wikimedia foundation, but in my opinion what is even more valuable is contributing your time to be an editor. A high quality source of knowledge like this requires constant maintenance, and there are many articles which have not been maintained or looked at for a long time.
There are many types of small tasks you can do, to help with this maintenance. One of my favourite types of edits to do is to check the citations on pages, to ensure that the text actually reflects what the citations say. You would be surprised, on smaller less frequently edited pages, how often the text doesn't reflect what is cited!
There are a million small edits like that, and edit by edit, that's how Wikipedia is built. There are so many small edits one can do, but because of how widely read Wikipedia is, even small edits make a huge impact.