https://mailarchive.ietf.org/arch/msg/ietf/Geuwrh5mPdkMB0BE8... - A much better source since the Tweet is just a screenshot of what's in the archive.

This follows after djb pointed out that the NSA was weakening encryption by recommending and demanding PQ encryption alone instead of the hybrid PQ+ECC pair that is safer, with this being blocked despite considerable opposition by the actual experienced researcher participants in the group.

Bad times for the internet.