Linux is more than just code, it’s community and values. Peertube certainly represents those ideas more than data harvesting systems designed by advertising companies to track us. I think we should support the communities, companies and software in line with our motivations for using Linux, namely freedom in the case of Peertube.
I think avoiding ChromeOS is wise, that just puts Google in charge of your IT systems and leave you at the mercy of their data harvesting abomination of Linux loaded with proprietary software.
I recommend replacing GUI apps that you use one by one with CLI apps, I started by changing my file manager to ranger. Don’t rush or you may get overwhelmed and don’t interrupt your workflow too much. Next I started using media players, video editors, and even steamcmd to launch games, try to find a replacement for GUI apps searching online. This list is a good place to start;