It’s a complete non-point though isn’t it? I can understand that you can’t really compare a ‘greatest hits’ type record with a collection of new material, but this is hardly that, is it?
Exactly half of the tracks are previously completely unreleased, most of the rest have only been available on very limited edition releases, a couple are b-sides from a pretty rare single. It’s safe to say that the vast majority of the tracks are completely new to the vast majority of people.
I don’t know what you mean when you say that it’s ‘not an album’ - it clearly is because it is presented as one by the artist. It would be strange to assume that ‘album’ is a term you can only use when an artist goes into a studio for a defined amount of time with the intention of recording 12 songs together to be releaed together. That has never been the exclusive case and it certainly isn’t now.