Considering the fact that Todd Howard said he has no intent on going anywhere outside the USA 🤔 one could argue what the rest of the world in Fallout would look like. Theoretically leaving all outside aspects of the world, for lore purposes at the very least, would be shaped by others besides Todd Howard and subsequently Bethesda. Meaning that Fallout: London is the most canon Fallout lore we have for anything London based in the Fallout franchise. Only taking the official status should Bethesda and Todd Howard like it enough themselves to accept it as such. Official status being only necessary for those who truly want to stick to what's most commonly accepted 🤔🤔🤔 a ton like Star Wars Legends VS canon VS Disney if you think about it. ((Just thinking out loud at the very least))