The medico-political Covid situation is confusing on multiple levels which will clearly not be resolved any time soon, but just when you thought that there can't possibly be any more new hypotheses to discuss, along comes Matt Ehret with another.
It is widely accepted that electromagnetic radiation can be damaging to our health. X-rays, gamma rays, nuclear radiation, ultra-violet sunshine are all acknowledged to be damaging, whilst sunlight (excluding damaging UV) is known to be beneficial both physically (allowing the body to generate vitamin D) and mentally (cheering us all up :) .
Infra-red can be damaging if it causes us to heat up too much.
All other radiation is thought to be harmless . . . except where it isn't, such a microwave radiation which causes us to heat up and is used for that purpose in microwave ovens (and for communications purposes in WiFi at low levels thought to be safe by regulators but disputed by campaigners)....