IMO Android UX is pretty great, for a personal computing device. YouTube's UX is also pretty great, for an ad delivery network. It succeeds at showing you ads.
YouTube doesn't really care if the search function gives you the right or wrong search result. Totally irrelevant as long as you click something, anything and your eyeballs are on the next ad. YouTube is optimised for keeping you watching ... literally anything... as long as they can play you some ads, preferably expensive ads.