Exactly.

This has no bearing again whatsoever on what the government can subpoena. Just because it "sucks" that you've designed your system that if the feds need access to one account you've configured it such that one must grant access to everyones account when you have to comply is par for the course.

You could say that the blame for Lavabit being shuttered is actually due to the technical design of the site and the compromises made for connivence. You should blame the site creator for that, not the USG for exploiting it.