Earlier quoted context omitted.
If you think that is flirtatious and sexualized, you have some serious issues. That video is whimsical and a bit over-produced, but it evokes play, not foreplay. Does someone need to be in a burqa and talk in a monotone to keep the creeps from being creepy? How narrow a range of expression do you want for women before you start to make their objectification their fault?
Thought experiment: you see a man, same age as Linda, doing all the things Linda is doing (squinting eyes, and then abruptly opening them and doing an affected laugh, fixing clothes, fixing cute socks, sitting on a sofa with legs bent and shoes sitting alongside, jumping up and down on the couch, etc.), what do you think of him? If you're not picking up on the flirtatious undertones, if you have no problem with that…
I totally find her gestures and the shots pretentious. I believe that's a part of her sales pitch but it didn't have to be, because the book idea is already good enough to sell.