Are projects like SELinux[1], SE for Android[2], or the STM/PE[3] serious enough?
[1]: "Retrospective: 26 Years of Flexible MAC" https://www.youtube.com/watch?v=AKWFbxbsU3o
[2]: https://selinuxproject.org/page/SEforAndroid
[3]: https://www.cyberscoop.com/nsa-firmware-open-source-coreboot...
Of course, they've more than squandered that by now, but it's not like they always completely ignored the IAD.
Edit: Like, stuff like cryptanalysis of SM4 is for sure on the table. I can even see their neat Diffie-Hellman hack that costs $100m per nonce. But a trivially remotely exploitable memory safety bug in software that runs large sections of the military? Like, come on.
And as such, the NSA (along with the CIA and perhaps, looking forward, the ONI, MIC, etc) are subject to deprecation.
In order for peace to come to earth in the information age, we must mature beyond a perceived need to have state agencies keeping secrets on the public dime and fomenting reasonable paranoia among the populous.
The point is to gain differential advantage. When you're the rich guy you don't want everyone's doors to be unlockable. When you're the poor guy you do. The USA is the rich guy.