That's ignoring how video game wikis are used. People will google "<game> <place where I'm stuck>" and completely miss the wiki. Or "<game> <mechanic>". Etc. So reachability and proper indexing by search engines is a must.

I've hit this on a few wikis where, for some (at the time inexplicable) reason, I'd get only the crappy Fandom wiki with above queries, and a good wiki when searching only for "<game> wiki" after seeing a link to it on reddit.

When the reason is to move away from Fandom, get people what they are looking for, and perhaps attract contributors, this is an issue. Your average gamer won't route through the Wiki's main page, rather rely on the top Google search result for their issue.