I’m still not sure why The Outer Worlds is thought of as the same team as New Vegas… The marketing for the game heavily pushed the connection because of Obsidian
I mean, you kind of answered your own question. Lots of old school Fallout fans were annoyed with the direction that Bethesda was taking the series, in an attempt to appeal to a wider market of FPS players. These fans remembered the days before the series was heavily focused on combat, and yearned for more of what Obsidian had done with it. So when Obsidian announced their own RPG, fans of New Vegas went wild. They were basically expecting a spiritual successor to New Vegas, because they had seen what Obsidian was capable of.