The first doctor makes the point on the proper testing that should be done to understand what is happening. At 4:50, he explains the proper way to get valid data.
No one conducting any type of scientific experiment would do it in the manner in which it is being done now.
The next video explains how we really do not know anything because of the way testing is being done.
Based on various reports, my sense is that if you are older and do not have good health, you should refrain from interacting with others. To shut down the entire world economy when we do not really know is foolish.
The idea that there is no trade off between health and commerce is silly. Of course there is. We make everyday decisions based on the trade off between price and safety. When you buy a car do you get every safety feature? When you buy a house do you have fire rated walls installed and bullet proof windows installed? Over 30,000 people die on highways each year. We could reduce this substantially by making the speed limit 10MPH. Are we evil for not advocating for a 10MPH limit? No. We take chances in life.