I linked to the older Latacora one upthread and this comment is linking to the newer Latacora one. So I think it's reasonable to read "they" as "Latacora" here.
Yes, I wrote the older Latacora one, which was based on thing I wrote under my own name before I founded Latacora; I'm pretty sure I'm on solid ground saying Colin Percival had nothing to do with anything I wrote, since I wrote the first one as a rebuttal to Colin. (Did I misread you? Maybe we just agree.)
Sorry. I'm touchy about the cursed meme I helped create and also flinching at the idea that anything I wrote might get attributed to Colin. Definitely don't mean to jump down your throat.
Yeah, just in the interests of clarity, somebody linked to the Latacora article “Cryptographic Right Answers” and I’d happened to read the updated Latacora article “Cryptographic Right Answers: Post Quantum Edition” a few hours beforehand, so I linked to it. “They” means Latacora, not Colin Percival.