I didn't see anything in the article about setting up incentives to keep the same thing from happening to Weird Gloop that happened to Fandom, which means the blog post is just empty marketing.

The only difference is that Weird Gloop is the little guy. Competition is good! That might be a good enough reason to choose them if you're in the market for wiki hosting!

But the moral posturing won't last if they become dominant, unless they set up incentives fundamentally differently than Fandom did, which doesn't seem to be the case.

As long as advertising is one of their revenue sources, the user experience will get crappy as soon as the network effects make it hard to leave. The cycle continues.