Accoding to the text, his much vaunted Hydroxychloroquine drug actually increased the death rate in a study on military veterans in a US government run hospital too. I wonder if they got a choice? 
Don'y really like the orange fur ball, but in his defense, I must say people don't get treated with a potentially deadly drug without a reason.
Chances are those groups being treated with the drug are more severe cases to begin with.
In other words, the survival rate difference could just be contributed by survivor's bias.
Conventionally, in the US, drugs are approved for a particular purpose. That approval is based not only on studies demonstrating safety, but studies demonstrating efficacy for the condition.
Once a drug has been approved for use, Doctors can and do prescribe the drug to patients with a different condition than the one the drug has been approved for.
Usually, this is called “open label” or “off label” use. In my view, in the great majority of cases, this is done responsibly.
In relatively few instances, there is something generally called “compassionate use” in which a treatment that has not shown specific efficacy is used with full consent and as something of a last resort.
Because we don’t go around giving people Covid-19 or placebo in a random drug trial, you are going to deal with some harsh realities. In these cases, we will only have the observational data to report – but that is still much better than no data.
Chloroquine drugs are known to carry significant risk and MDs know this, so, yes, they are not going to prescribe the drug for “the heck of it”.
The problem (in this case) with the “Orange Plague” is that he should not be talking about treatments at all because he is obviously clueless and embarrassing so. I actually feel pity for the legitimate SMEs who sit back there and must be ulcerating on a daily basis.