Yeah, the main stories (Artemis & Atlas) are essentially one big tutorial. You can safely put them aside after unlocking the Anomaly, and you’ll have access to most of the important features, but at some point you’ll want to finish it.
Or, if the story bores you, and you don’t mind figuring stuff out, the new game mode might appeal to you. It shouldn’t be too hard to figure stuff out on your own, especially if you’ve gotten as far as unlocking the Anomaly in another mode. I find it to be super refreshing and satisfying, although some of the rewards are a little too good.