I've been reading a lot, and it seems that the current consensus is that it looks like all of the promising avenues of help probably won't be 100% cures, and even the various vaccines may well not have a 100% effectiveness in totally preventing everyone from contracting the disease. But, having more and more potential "treatments" and potential preventatives on the horizon, the most vulnerable may be able to survive and many may be able to come out of the bout with the virus without crippling permanent damage, through use of a combination of treatments all providing "partial" help from their cumulative effect. I don't believe that video's doctors 'findings" mean that he's found a panacea cure for The Earth's masses. But, I had heard from more than one epidemiologist who are working with groups on finding potential Covid-19 treatments, that steroids have been found to reduce the most debilitating effects of the immune system's overactivity on the victim's organs, and lessens the harshness of the symptoms that would otherwise occur.
For myself, I have less anxiety than I did when almost all people over 60 years old that were put on ventilators were dying. At that time, I thought that if I were to contract the virus, I surely wouldn't survive. But now, many people are just given oxygen without being put on the ventilator, and many more are surviving. That, together with lying on their stomachs, rather than their backs, and having steroids, and Remdezivir, or another of the promising partially effective dangerous extreme reaction reducing anti-inflammatory drugs or other treatments, gives me some hope that if I DO catch the virus, I may be able to live through it, and maybe even avoid major organ damage and needing a lung transplant, or being chained to a kidney machine or oxygen tank for the rest of my life.
Still, at this time, I don't dare go into a public building, airport waiting room, or airplane cabin. I won't even sit on outdoor tables of a restaurant. I'll have to wait for some kind of preventative with a decent lasting period of effectiveness, and a decent % of effectiveness on users. I have faith that some combination of methods to keep us oldies alive until a viable, effective vaccine will be developed and distributed will show up within the next 4-7 months. I just have to continue to stay away from other people until then.