Again, here's someone analytical just not taking the analysis a few steps forward.
So you have a person who sees the commercial or advertising for Wii U and comes away confused. As a tangent, these twitter posts seem to be given immortality, as if the writer is forever confused, which is illogical.
Anyway, the confused person has something very important now; an interest to know more. This is the next important step. Whether they ask on twitter, or Google it, or just pay attention the next time the commercial comes on, they're learning about the Wii U, and some are being very public about it.
The general press is positive on the Wii U, so these eager people are likely going to hear good things. Good publicity, free publicity.
It'll be very easy for this all to work in Nintendo's favor.