I read through this, and I am wondering why you posted this very carefully crafted troll.
The possibility of bootstrap mitigates the possible rewards to the attackers, including attackers from government X.
And, yes, you should be using Theo's OS as well as Debby and Ian's (since you insist on bringing Theo up). Maybe not as a part of your everyday toolset, but you should have it handy.
SELinux? I don't know. It's one of the reasons I finally got off my laziness and started using Debian instead of Fedora for about half of my everyday stuff. It's worth looking at, just to recognize the bars that it misses in trying to layer security on top of the kernel. The current incarnation at least stays out of your way almost as well as the fundamental Linux permissions system does.
Fedora suffers from the centralized processes. Nowhere nearly as much as a closed OS, but it does suffer. Debian suffers a bit from lack of centralization, but that is offset by the eclectic nature of the development community. (The old argument of centralization versus decentralization.)
OpenBSD requires a higher skill level, but that suggests the real answer to your questions.
If you are concerned about whether some government or some non-governmental group might pervert your libre OS of choice, what you should be doing is not beefing about it here. Become a developer. Get involved. Learn the tools.
If you want more eyes on the code, join the process. Add your own eyes. If Debian is too big, has too much institutional baggage, join the openBSD team (since you brought them up).
If you are good enough at the tools, start your own distro. Bootstrap your gcc with clang, or vice versa. Use that to bootstrap your new distro. (Oversimplifying, but that's a quick overview of the process.)
Get as much involved as you have time to.
In the meantime, be careful where you put which parts of your data when. And be careful of what kind of data you generate. Try not to do illegal things that you don't have to, and don't be too obvious about it. Don't be noisy about the illegal things you think you have to do. And don't be too noisy about trying to follow the letter of the law, either. Etc.
But these are the rules you should already be following. Some parts of history have been more dangerous than others, but life has always been this way.
!984 and Animal Farm were allegories of the world the authors lived in, not predictions of some dystopian future.
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Joel Rees