These are regular Android apps that someone has already run through a patcher for you, so there’s nothing to set up and no root involved. YouTube, YouTube Music and Reddit use the official Morphe patches. Everything else is built with patch bundles written by community developers, and what each one changes varies a lot: some remove ads, some unlock a paid tier, a few barely change anything. Every app page names the exact bundle and lists what it does, including the things that don’t work.
The APKs come from the community AutoBuilds pipeline, not from the Morphe team or from this site, and the download links here are refreshed several times a day.