Very sorry for your loss.
He went quickly in the hospital. I still haven't been able to find out just what protocol was used with him.
I think everyone needs to be made aware of treatment options, including doctors.
Our own gas_dr here fights to get monoclonals for his patients. The vast majority of the rest, do not.
To be fair, only more recent monoclonal cocktails provide appreciable antibodies to the newest strains of COVID, so even the vaccinated need to be prepared.
I strongly believe the studies showing many supplements and medicines are helpful.