Fallout 76 features many daily and weekly challenges - that award you with a meta currency called Atoms used to buy cosmetics for your character at the Atomic Shop - including new poses for Photo Mode.
Meta currency?
Mhm.
They've pretty much stated they want it to be a live service game and a live service game needs to have recurrent revenue so it shouldn't surprise anyone really.
Anyway.
I have a another conspiracy theory on why the game looks the way it does.
So, Bethesda teased TES6 at E3 and... Did they tease Starfield finally too? Either way, IIRC both were just logo teases.
But this game does not look like they have their main force behind the game. It's just... Sloppy... Even for Bethesda. So why does it look that way? Well, the studio they acquired that did Battleborn got merged with Bethesda, right? So what is this game? An online game. The studio they merged had online experience. Bethesda's game development studio does not have online experience. So if they got merged with Bethesda proper then it'd make sense that Bethesda would like them to get their feet wet with their inhouse engine, Creation Engine.
Now, we have a studio that got merged who's game did not succeed and Bethesda wanting to dip their toes into the current live service model. However, they are not certain about it nor the studio they merged with. This might be their attempt to show they can perform as Bethesda expect them to.
So, as a business, would it make sense for Bethesda to make them do a proper new AAA title or for them to do a kind of New Vegas type of game where they reuse assets already available? The latter would be far less costly. Especially for a studio's members who's previous title was a flop.
Now, this would make sense as to why the game looks the way it does. New people, new to the engine, given less time to work on the project ala Obsidian with New Vegas, doing an online model game which was what they tried to do with their last game; But reusing FO4's template and assets to help mitigate costs and time.
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With all of this said, I still don't think it excuses anything. But it might explain why it looks like a bunch of mods cobbled together.
They literally could put any other unknown faction in place of BoS. Oh wait, it's one of those that think that in order for a Fallout game to be a Fallout game, it needs Super Mutants, BoS, bottlecaps, and other shit that Bethesda thinks it needs to be in every Fallout game? Seems like it.
I think it's one of those cases where a franchise gets so popular that iconography takes precedence over anything else. And the longer that keeps up the harder it is for a franchise to deviate away from it while retaining its fanbase as they might feel alienated as the things they knew and loved are not gone and replaced with what they feel are cheap attempts at replacements.
It's a curse that has affected a lot of IP's.