> If you don’t install Apple Music or Apple TV, you can continue to use iTunes for all your media.
… so why would I install either of those? What’s actually changing if I only have iTunes installed?
This being Windows, at least you're not being forced to immediately upgrade like it happens on a Mac (where those things are seemingly tied to your version of macOS) and in the case of eventual breakage can continue using a previous version indefinitely, but that leads to the next question – on the off chance that you do want to use the iTunes store, too, how long will that keep working with old iTunes versions?