That reads as reasonable to me, but raises a subsequent question: if these lapses are so common and so many countries possess the capacity for serious mistakes, why don't we see more regular outbreaks (if not full-blown pandemics) caused by labs? In other words, what makes COVID special? I didn't find a satisfactory answer to the latter question in the article.
It's my (uninformed, uneducated) opinion that the severity of the author's claims don't correspond to the reality of the last few national and international disease crises (AIDS, Ebola, Zika, COVID). Which isn't to say that we should absolutely dismiss the possibility that COVID originated in a lab, only that claims that it did amount to currently unsubstantiated claims about COVID's special status among other recent pandemics.
The problem I have is that China isn't interested in investigating the start of the pandemic. They've thrown away their wastewater samples, there's some evidence WHO found of SARS-CoV-2 spreading locally prior to December 2019, but no backtesting of any samples. Nobody seems to be looking at the bats in Hubei for sarbecoviruses.
By blocking study of the zoonotic origin of the pandemic, they can use the theory it was imported in food for domestic propaganda. For external propaganda they're happy to have conspiracy theories flying about this lab leak theory creating a "firehose of falsehoods" and distractions. They can rely on American scientists to get engaged with the conspiracy theory and debunk it, wasting their efforts and then they can use that also for domestic propaganda.
Meanwhile nobody gets fucking outraged that China isn't properly investigating the origin of the virus and isn't aggressively looking at the bats in Hubei and any animal farms in the surrounding area. My suspicion is that animal farms (like minks) functioned as a bioreactor that had many opportunities to spillover from bats and then the close contact allowed it to spread well and mutate to optimize it for a more human-like ACE2 receptor, then the mink contact with humans allowed multiple spillover events until it started to spread epidemically in humans.
Why should they be interested? We know how SARS type viruses can spread to humans, we know what other species are vulnerable, and we know what things make it more or less likely. A new outbreak was not a surprising result. What benefit is there to aggressively investigating the exact transmission method?
If your mink idea was found to be accurate, would you advocate closing mink farms? It being the source this time doesn't make it likely to cause the next transferrable virus.