Not to be presumptuous, but what I think he’s saying is that exposure to the coronavirus will send a vaccinated person’s immune system (killer lymphocytes) into hyperdrive and cause it to kill the vaccinee. And this will apply (if I’ve understood him correctly) to all coronaviruses, not just the bat-human hybrid that is the cause of the Covid-19 pandemic.
If that is the case, shouldn’t we have seen some of this type of mortality in the vaxxed already? Corona viruses are not exactly rare.