Ubiq,
“it isn’t random” because he is saving sick people’s lives.
How on earth was he supposed to use his med regimen on people who in a “random sample” might not even have had coronavirus infection?! Of course he treated sick people as he said.
“if you take a random sample of 500 at-risk people WHO HAVE SYMPTOMS” means that it is random only in the sense that it is “first to need my services will ring my office for an appointment first”, and they are not selected by any other criteria, eg, gender, age , height, or any other disability or disease.