He didn't say anything wrong or even shady. The shadiest thing there was calling "Applause" childish, which is true, anyway. "G.U.Y." is obviously much better.
Ironically, the actual material this era (Besides "Applause" and its video) has been fine; the music is great, and the "G.U.Y." video looks fine. I jumped because of how she was handling the era and how she was acting. Her behavior got worse and worse, and I wasn't having it.