The crazy part is he was probably killed by intrusive ventilation. He even admits that the ventilators were rupturing his lungs (this is caused by the PEEP being set too high, not by Covid, and it is frequently fatal on its own). This was warned about very, very early on in the pandemic and tens of thousands died because doctors with too little common sense were slamming the pressure up because they were told to.
I feel for him because he suffered a loss like that and was immediately taken in by propagandizers. But really he should be suing that hospital and getting the doctor or nurse's medical license struck off, not blaming random people.