Louis Rossman is a huge backer of Grayjay, and I would trust that man with my life. He's a huge proponent of right to repair, he regularly stands up for the rights of people regarding fair use, etc.

Grayjay itself is an awesome app, and I do use it, but since they're always playing that cat and mouse game, I find it always needing to update in order to keep the video sites I use functional. Seriously support it if you don't already.