I'm not going to comment on whether he's right or wrong, lest I fall into the same trap I just outlined, as I'm also not a lawyer, but, unrelated to this particular case, I see this kind of thing often on the internet (as well as real life), where people who have no knowledge or experience about a particular topic go on to comment as if they were an authority on the subject. I see it on /r/legaladvice and other subreddits, and on HN here in many cases, including on certain lab leak theories. It reminds me of the Gell-Man Amnesia Effect.