I know that I'll eat my words soon, but...
I'm willing to give them the benefit of doubt. Sure, they screw over their fanbase, but they already signed a contract with Obsidian, and it's Obsidian we'll be talking to, not P'Ete the Liar.
Way I see it, the reason Fo3 feels so detached is that it's Bethesda's separate take on the Fallout universe. They like previous titles and decided they should give the old dudes a chance to go at it.
Way I see it:
Full Fallout:
Fo1 -> Fo2 -> vB -> F:NV
|
|
\...> FoT (semicanon)
\...> Fo3 (semicanon)
Bethesda:
Fo3 (+ DLCs) as a reboot
Fo1, Fo2, FoT, FOBOS, vB (background and foundation)