That was all before the Switch released. Like when Kimishima said the Switch could outsell the Wii and most answers were sarcastic or mocking him.
Us forum idiots like to discuss a lot, but the excutives and PR people have the data and knowledge we don't. We should stop doubting them.
I am pretty sure the OP is refering to the post-launch statements by Gamestop. Lots of people were still in denial that Switch could be a winner.