Yep, the EF mount is definately obselete, thats why keep on launching new ones, and new cameras that take them, and why they made the M backwards compatable with them. Definately on the way out.
And the FD transition to EF took about 5 seconds, not 5 years. You either adopted or you didn't. There was an adaptor, but most folk either soldiered on, or embraced the brave new world. There wasn't really any transitional path to speak of. Seperate and exclusive systems.