Don't get me wrong, but in online discussions, all too often telling the whole truth makes people ignore your message. That's probably also why dishonest politicians can get populist votes from many people. Whenever you include the material to dig your grave with, people just take that by the horns and stop looking at the rest of your argument even if that disclosure is the reason why you are a qualified expert that should be weighing into the discussion on a given topic.
I don't know the details about this Daszak guy, I only know what you wrote and the comments above yours. Perhaps this does not apply in this situation; that's not for me to say. But I can see why they might not have dug their own grave while trying to communicate a message with honest intentions. It is extremely easy to have subtly wrong wording or just bad luck and get people to ignore everything you said before or after "my lab worked on coronaviruses".
Anyway, this was in Lancet, a scientific publisher, not a mass medium, disclosures of interest are mandatory. I know that in today's age it looks like science papers are just mass media because they're so easy to consume and distribute, but they are not. They're supposed to be rigurous, otherwise people would lose trust in them. Which is exactly what happened in this pandemic: it's a worldwide lack of trust in science, scientists, leaders, governments.