Correct. They support it purely for pragmatic reasons. If there was any feasible way they could implement a perfectly secure backdoor, and that it could apply t

Correct. They support it purely for pragmatic reasons. If there was any feasible way they could implement a perfectly secure backdoor, and that it could apply to most encryption that most people use, they'd do it in a heartbeat. But they know it's not possible and never will be. The real question is what "clever" new methods they'll invent to deal with a post-end-to-end-encryption world.