There appears to be a conflict in the documentation
I subscribe to both Apple Music and iTunes Match (since I buy music from Bandcamp, Boomkat, etc)
I'm trying to determine if iTunes Match is actually redundant
https://support.apple.com/en-us/HT204146
Subscribe to iTunes Match
iTunes Match gives you access to all of your music on all of your devices, even songs that you've imported from other sources such as CDs.
Also on the page
If you have an Apple Music membership, you get all of the benefits of iTunes Match, plus access to the entire Apple Music catalog. You can also get a Family Membership to share the catalog with your family members. Learn more about joining Apple Music.
However
https://support.apple.com/en-us/HT204926
Turn on Sync Library with Apple Music
If you subscribe to Apple Music, you can turn on Sync Library to access your music library and music that you've downloaded from Apple Music on all of your devices.
Since, music from Bandcamp, etc. isn't downloaded from Apple Music, both pages can't be correct/reflective of the current situation.
Anyone have experience with this?