The one I have noted is that there are many articles flying around about how hydroxychloroquine (or chloroquine) doesn't stop the virus or gives poor results. Then they go on to shill for a nonexistent vaccine.
If that was all that was used, they are probably right.
It is the combination of Hydroxychloroquine, Azithromycin, and Zinc Sulfate which had the good results. Leave one of those out (especially the Zinc Sulfate) and the results won't be as good.
There are other antivirals being tested as well. Treatments can get some through the disease, others will not even need them.
Enough get through and recover, and a vaccine is moot.
The UV-C treatment seemed to have merit, killing some of the virus in the patient's bloodstream, and letting the body make antibodies to deal with the rest. (Similar to what vaccines do, only with out potentially harmful squalene or preservatives). That should get further study, if for no other reason than such treatment, if effective and without serious side effects, would be beneficial in future novel disease outbreaks, no matter the source of the pathogen.