Was the apocalypse in the Fallout universe caused by single-resource dependencies for energy grids? Was it caused by desperate governments hellbent on nuclear proliferation? Was it caused by an extended practice of imperialism which never truly ended?!
No. I have discovered the truth.
It’s because The Cambridge Diner has a gender neutral washroom:
Take care of yourselves, lovelies. I know you’re just ruined by this information.