Things that make me mad for no reason

There is a video game named New Super Mario Bros U Deluxe available to download and play on the Nintendo Switch. Emphasis on Nintendo Switch. What does the U in the aforementioned title represent? The U stands for Wii U. On a game that is available for Nintendo Switch. Why? Consider that New Super Mario Bros U deluxe is a port of New Super Mario Bros U for the Wii U. Still, if they could add the word Deluxe, they could remove the letter U.

Its not really a big deal, doesn't matter at all in the grand scheme of things, just something that slightly annoys me for no good reason...