Although I find strange the change of heart, this is the reason the author made the repo private, according to his pinned comment in the video:

> UPDATE: I've received way more interest in this project and the codebase than I anticipated and I've made it temporarily closed-source. I may release it publicly again but I really want to make sure that my work isn't used without crediting me. Thanks for understanding bros!

Maybe it's too soon to start distributing copies.