The experience was terrible. It wasn't always update-to-date with the latest patch, and on mobile there were so many ads rendering the whole thing unreadable.
The catch is that there was a better wiki, called Liquipedia. But Google never showed it first and I kept getting tricked to click that shitty fandom site.
(It was years ago. But I just tested it a bit and for most Dota-related keywords, fandom is still ranked higher than liquipedia. I don't know if the quality of fandom site has improved though.)