Ah, wait a tic.

I could quibble about the "clear" part but it strikes me your argument is intended to rule out COVID-19 being an artificial virus.

But why couldn't COVID-19 have been a leak of a natural virus that this lab was studying? Remember that the last person to die of smallpox died this way. That a Chinese virology lab would be studying SARS is hardly unreasonable.

Also, the most reasonable "conspiracy" theory I've heard was neatly laid out by Martin Rezny here https://nartimar.medium.com/no-this-is-not-accurate-e1fe0939ad77 and you don't seem to address it.

Do I believe these conspiracy theories are proven true? No, but I don't believe they're proven false either.

Occam's Razor says that the "official" story is the most likely one but at least your article hasn't proved the alternative theories "obviously false", so unfortunately, doubt remains.

Perhaps a sequel article to deal with those two cases?