With all due respect sir, you have no qualification in Pulmonology, and you cannot criticize specialists who have spent the best part of 2 decades training, nor can you have a qualified opinion on anything to do with respiration, oxygen levels and lung physiology etc. You are wrong that invasive techniques are the default treatment, as was clearly seen in SA from the start as ventilators were only used as an absolute last resort in almost all cases.The Pulmonologists have to face up to the fact that they have failed to challenge their preconceived ideas about how to properly diagnose issues with breathing, oxygen levels in the blood, looking for other causes than issues with the how the lings are working. And then seriously re-evaluate their default treatment of using invasive techniques. That much is absolutely clear.
The Epidemiologists have had a serious lesson in the value of their models and their statistical methods, when even lay-people can pick their models to pieces like many of us have been able to.
They need to take notice of alternative ways in analysing how diseases like viruses spread.
And then the medical authorities have to re-evaluate how they go about restricting doctors from doing what doctors do, and that is to diagnose, evaluate, and treat patients with whatever they find works!
And in this country, we have very successfully created a (yet-to-be-determined-how-deep) rooted mistrust of the public health system.
Lots of room for introspection and review, which should keep them busy for a few years.