One of her stretch goals was developing a curriculum with the videos so that they could be used for educational purposes as well. Between that and defining your terms, which is often done in debates or presentations to be absolutely certain everyone is on the same page with what you're discussing, defining the term makes a lot of sense here.
Additionally, it makes sense with her overall goal--if you're aiming to deconstruct something to examine it closely, then yes, you need to be specific about what it is you're examining and deconstructing.
As before, I enjoyed the video and found it interesting. I liked the proposed non-damsel plot given at the end as well.

And I appreciate that she didn't exclude indie games from the examples on either side--I mention that one because I saw someone on twitter saying something to the effect of not liking that she'd done that. But just because you're indie and not an AAA studio, or vice versa, doesn't somehow excuse you from criticisms or close examinations, etc. It was a strange comment, basically, or so I thought.