I played through the whole game last year and while I had fun, you can definitely tell the scope is too big. There's lots to do but when you do things, there isn't much depth. Systems that you think should be in place just aren't there. The game also has a lot of features that align with open world action games of the era like Ghost of Tsushima or Horizon Forbidden West. There's stealth, there's a crafting system, there's collectibles and fetch quests. But there's few features that align with most other role playing games. You cant get a bite to eat at nearly any restaurant. You can't have a conversation with an NPC that isn't one of the dozen that's relevant to the story. (My favorite activity in fallout is to chat with random characters about random things.) Dialogue trees are shockingly stiff and inconsequential. Most missions have choices but it boils down to "X character is alive instead of unconscious."

There's a lot more I could go into but in general it just came across like it was almost unfinished. The only mission I played that felt like a true RPG mission instead of a stealth game or a shooter was the Flathead mission, so it makes sense that's the mission they relentlessly previewed back in 2019.