Worth noting DJB (the article author) was on two competing (losing) teams to Kyber[0] in Round 3. And has an open submission in round 4 (still in progress). That's going to slightly complicate any FOIA until after the fact, or it should. Not that there's no merit in the request.
[0]: https://csrc.nist.gov/Projects/post-quantum-cryptography/pos...