When it was Wikia, it was alright. It has evolved into something atrocious that I actively avoid.

Fandom has become incredibly scummy. I only try to use it on my PC where I have adblockers and a userscript to cut out all the BS they push, and even then it's not enough. They've now turned all searches into cross-wiki searches with absolutely no way to tell if something's on the wiki you're already on until you mouse over it. If I go to The Orville wiki and search for Moclans, it gives me that wiki's page on Moclans, but also pages on Moclans from the "Aliens Wiki", a wiki for some weird ironic cartoon drawn in MS Paint, and another vastly inferior The Orville wiki where the only text on the page is "The Moclans are an alien race in The Orville." All these pages look the same in the search box, and there's no way to turn off cross-wiki search (as far as I could see). I get that they gotta make money somehow, but you should not be able to make your site horrible to use while still dominating the market because you're the easiest product to use.

It was alright until you wanted to leave, suddenly you were banned and "no longer represented the community", and wikia employees had wide latitude in doing whatever they could to frustrate any attempt to migrate off of wikia.