At this point I've just resigned myself to the fact that Bethesda, like it or not, owns the IP now, and are free to rape it as hard as they see fit. And rape it they will.
A new advanced Pip-Boy, even though the war was 200 years ago, and no one at vault-tek was around to invent new things? No problem, Bethesda says it's canon, so now it is.
Brotherhood of Steel being a militant summer camp for wanna-be soldiers and cops? No problem, Bethesda says it's canon, so now it is.
The Enclave being utterly destroyed, and yet being able to build more verti-birds, and move their HQ to Washington D.C.? No problem, Bethesda says it's canon, so now it is.
Jet showing up on the west coast a hundred years after Myron died in a bar fight in New Reno? No problem, Bethesda says it's canon, so now it is.
Radio DJ's, houses you can decorate, and robots that fly around playing marching band music? No problem, Bethesda says it's canon, so now it is.
Super Mutants from the west coast showing up in D.C. a hundred years after their military base was wiped out, preventing new super mutants from being created? No problem, Bethesda says it's canon, so now it is.
It's becoming pointless to point all all the places where they ignore, and/or spit in the face of the original games. They decided a long time ago that those other games weren't something to be respected. They long ago decided that fans of Fallout weren't as important as fans of Bethesda.