I guess this means it’s fan service and doesn’t intend to tell the stories to a new audience which is fair

Not really. It isn’t as good as Far Harbor aeven though the world building is better and more interesting. Of course it’s way worse than Dragonborn. But it’s definitely better than Nuka World and Automaton. And also better than the Pitt and Mothership Zeta even though it’s difficult to make comparisons with Fallout 3