Comment by Spivak
I think https://0pointer.net/blog/authenticated-boot-and-disk-encryp... is a much better explanation of the motivation behind this straight from the horse's mouth. It does a really good job of motivating the need for this in a way that explains why you as the end user would desire such features.
The motivation is nice. The idea has merit.
It's the people behind this project who scare me.