Ask HN: Has anyone joined the growth.design UX course and has opinions?

Ref: https://members.growth.design/product-psychology-mastery/

They have a really nice home page on biases and they do monthly case studies on various things (headpsace this month, a couple of months ago was tik tok) and they sounds pretty cool.

Wondering if anyone here has used the actual course though and if there're any opinions on it?