People keep quoting that line about Nintendo "wanting to satisfy Wii U owners", but actions speak louder than words, and the last year shows they clearly don't give a shit about satisfying Wii U owners.
As for "but they keep saying it's coming to Wii U," they also said it would release in 2015, then in 2016, now in 2017. They've proven themselves untrustworthy.
I predict Zelda will be made an NX exclusive in order to try to blackmail Wii U owners into upgrading to the new console to get the game they've been promised for years.
Just watch.