While an interesting project, at first glance I don't really see what this front-end brings to YouTube compared to the original front-end. Speed, maybe? But this comes at the cost the UX. I would much rather see something like this implemented: https://uxdesign.cc/my-attempt-at-redesigning-youtube-for-a-...
Well I don't want my Google account to be associated with the videos I watch. Nor do I want to be automatically signed into YouTube if I login to my Google account and watch a YouTube video.
As long it plays YouTube videos and it removes Google's tracking, then that is enough for me, UX changes is a bonus.