It may be interesting but his physics do not pass the test/ Masks do work and the argument put forward is so full of hole and is so typical of people who work in theroy but have very little practical knowledge
As to hydroxychloroquinine he quotes the Lancer report which even a lay person can deduce is a pack of lies
The most impressive quote that I have read is from the chief medical officer in Taiwan which is the leading country in controlling Covid -19, and that was "making masks mandatory will cut the transmission rate by 95%
