The same was said of selinux. I think perhaps the NSA is slightly more complicated with more complex goals than you describe.
https://www.miracl.com/press/backdoors-in-nist-elliptic-curv...
Their goals are at the very least nationalist.
As a non US citizen why should I trust them at all?
Their main directive errodes my privacy on most levels in most sense of the words.
You’re making an assumption that in order to gather signals intelligence, that they need to trick people into using compromised cryptography.
A fact that is not in dispute is that huge portions of the US federal government implement NSA recommendations and standards. For your assumption to be true, the NSA must be intentionally weakening federal systems. Nothing about that seems nationalistic to me.