I personally don't really care about the goofy shit like Cabot. Fallout, to me, was always heavily based on the frankly RETARDED 1950's scifi b-movies tropes like the giant ants from THEM!, and aliens invading earth and stuff.
Fallout has, IMO, been at its worst when it tires to take itself seriously, because nothing about its setting is really that serious. Even going back to Fallout 1/2, The Master and The Enclave were such mustache twirling, saturday morning cartoon, evil villains I wouldn't be surprised to see them on the Legion of doom alongside Lex Luthor and Skeletor.
-The BoS are a backwards tech-cult using a ranking system of medieval knights.
-We got crazy organization like the hubologists, the bright followers, the children of the atom.
-Major factions do dumb things like wear football/baseball gear for armor, and base themselves around things like the roman empire in some giant cosplay LARP empire.
These movies the series were almost never consistent, nor did they ever really make sense, it was just goofy fun, and as the long as the games remain that way... I don't really see the problem. I think most people take things like canon and lore way to seriously, its just a game.
If I wanted some serious apocalyptic future I would play Warhammer or something.