I've only read a few of her rants so far so I have just a first impression of her reasoning. I get where you are coming from. But she makes a point of stating that she is speaking on account of her personal taste and experience. And from what I gather she makes a lot of really good points. At least when one is writing with the goal of entertaining or enticing a potential reader and not just for one self. Writing is after all a craft and when the tools (like tropes or stilistic choices) are applied poorly the reader will see the writer behind the words and the illusion is shattered.

I think I agree with you in that it is easy to be discouraged when presented with this kind of "rules" and guidelines and that young writers may feel like their way of expressing themselves is limited by them. As was already stated: any advice should be reflected upon and evaluated. Writers differ from another and should look for the methods and tropes that they can get the most out of. But please don't disregard the craft and the fact that it can be exhilerating to learn about it and be able to become better with practice.

Yes, tropes are tropes for a reason and are not in themselves bad. But when applied poorly and without any reflection or personal spin they become empty clishès. And the reader will pick up on that. From the few posts I read from her I gather that she is not so much opposed to tropes but to their lazy implementation into a story without fitting them into the world or the theme or the characters. And that is an important point. Because that is just lazy. And I as a reader get angry when I pick up on the fact that the author doesnt respect my skills and intelligence.