Exactly. An actual strong encryption backdoor would be impractical and/or would be immediately broken and leaked / dead on arrival (the entire crypto community would be motivated, on a personal level, to undermine this). The thing we have to worry about is players like Facebook allowing MITM snooping on behalf of the government without having an actual backdoor, as they have already agreed to do. I think Apple and others would sooner disobey a court order and throw lawyers and money at the problem than snoop for the gov, though, which would be a very good thing. We need to keep pressure on Facebook and keep exposing companies that give in to requests like this.