I bought Fenyx Rising by Ubisoft for the Switch. Turns out, as long as the Switch has an internet connection, the software refuses to let me start a game, if it cannot positively check that I've got a user account at Ubisoft's. Also, without an account I don't get to have the "free" DLCs that come with the game, which are said to be huge. In general you have two options to save the game - locally or online with Ubisoft. During challenges though the button for local saving is greyed out. At the in-game HQ you can get (but only when having an account) rewards for tertiary task - stuff that would be fullfilled anyway by playing the game. The rewards are more of the resources you need to further your equipment. In other words, make an account or you have to grind more than the sheeple who do.
Whoever thought, that would be acceptable. Never again Ubisoft. I guess, now I'm preparing to make a scene at the super market, should they decide not to give me my money back.