Of course it is, the Wii had "filthy casual" smeared all over it, continuing the legacy with the name was not a good idea.
It's sad because the Wii U is almost the opposite of the Wii. The Wii had tons of crappy, casual party games from third parties, the Wii U just has a lot of insanely good first party titles from Nintendo meant to appease the hardcore Nintendo gamer.
You're Gonna Carry That Weight.
Xbox One - PS4 - Wii U - PC