i think you might be misunderstanding what ‘3rd party’ means. if ubisoft is making you use an ubisoft launcher to run ubisoft games, that’d be first party. here’s an article detailing what the terms mean with regards to game developers. a third party launcher would be like when you add a non-steam game to steam.
not very much. honestly, only once or twice, for a laugh, which is probably still more than most folks lol