TigerNut, I glanced over the pages you alluded to. You had the misfortune to bump into Wikipedia's most infamous editor. He has been blocked repeatedly for his abusive treatment of other editors. The community has been reluctant to permanently block him because he produces a vast quantity of high quality work. There has been a lot of controversy about it. At what point does the harm he causes outweigh the value of his massive contributions?
You also ran into a second issue. I see you've pretty well figured it out, but I'll discuss it for public benefit. Most new editors are surprised to discover that Wikipedia does not allow articles to contain "truth". Instead, the goal of Wikipedia is to accurately summarize what reliable sources say.
If most reliable sources say the moon is made of cheese, then Wikipedia is going to accurately reflect those sources.
There's a pretty good reason for that. Editors show up at all sorts of articles wanting to write "truth". Articles about astrology, politics, evolution, ghosts, religions, global warming, everywhere. People know "the truth" and want to write it into the articles. As a matter of sanity and survival Wikipedia HAS to have a rule to shut down the kooks, believers, and activists. The rule is that Wikipedia don't deal in Truth, it deals in Reliable Sources. Editors don't judge the Truth, editors judge the Sources.
It is a messy problem when reliable sources are wrong. That's a problem Wikipedia can't fix. Editors can try to apply some common sense and hopefully find an agreeable way to deal with it. But when there's a dispute, the rule is to summarize the sources. Astrologers have to accept astrology is considered pseudoscience. Experts in recording ghost-voices have to accept that it's considered pseudoscience. Creationists and climate change deniers have to accept that evolution and global warming are considered solid mainstream accepted science. And as a side effect, you may have to accept that it's going to be difficult to fix an article if the available reliable sources screwed up.