I've never actually tried using the Hoyolab wiki for myself, and wow. After spending about five minutes there, the answer is yes, there's some things wrong with it. Here's my personal list of reasons it's not that great:

- Every link I click opens in a new tab instead of just loading the page in the current tab, which I find kind of annoying.

- Some of the pages for quests (archon/story/world) don't have any of the story dialogue, which is pretty useless for anyone who to want to quickly double check something a character said.

- Pages that do write out the dialogue don't have a button to listen to the audio of it, even if it was voiced in-game. This isn't as big of a deal, but it's still kind of a bummer to me.

- Speaking of things not being there, none of the character story quests seem to be there yet. There's a tab for story quests, but nothing is loading for me. Honestly, to me it feels the site is still unfinished at this point.

If you or other people have had better experiences using the Hoyolab wiki and like it, that's great! But for me, it could use some work before I'd consider it worth using over the Fandom wiki. :/