So basically the author writes a diary critiquing the country's response to the virus and mask situation, but goes step by step repeating the exact reasons why different masks don't work or shouldn't be relied on. But the author has the initiative to start a company to sell masks, which luckily is the only type of mask you should wear.

Mask wearing countries did better at halting the disease, except for China of course, do we trust their numbers?

/shrug

He opens the article by shilling for his company.