Dockerized programs are easy to install and easy to make system agnostic. It’s not always beneficial if you just have one system and you’ve already got a lot to learn about how to set it up, because it adds another layer of knowledge that you need to use it effectively. But if you’re comfortable with *nix and tech in general it’s nice to containerize stuff
It’s funny because I agree with you - out of everything that collects my data I get the most out of YouTube, it often recommends things I like quite a bit and it’s the primary way I discover new music