"Well, she wanted me to get married too", Shallan said. "So I wouldn't call her sexist. Merely... Jasnah-ist?" She paused. "Jasnagynistic? No, drat. It would have to be Misjasnahistic, and that doesn't work nearly as well, does it?"
Now, without devolving into debating the anachronicity of the terms used here in general - this is a good example of what I am talking about, and perhaps 'hip' was the wrong way to word it, but it goes beyond mere 'bad wordplay' for me. If you can read the above without cringing, all the more power to you. For me, passages like these completely break immersion and leave me wondering whether I'm reading some kind of bad fanfic. And unfortunately, yes, that does color the rest of the reading, because trusting the author to be competent is (at least to me) an important part of staying immersed. And, thusly let down by Sanderson, my mind moves onto the other things that can be seen as flaws.
That being said, I don't feel disinterested: He has several good qualities as a writer. But just like the Marvel movies probably won't be regarded as the masterpieces of our times, despite their popularity, Sanderson's books are not, to me, worthy of such praise either. In the words of Francis Bacon, his books are to be "swallowed", not "read wholly, and with diligence and attention".