That's really old data. They have now rescinded their previous statements on HCQ because simply put, they lied.None of that is "proof" and that isn't how science or medicine works.
Correlation isn't causation and we don't know something works until it is studied.
Studies are designed in a way to eliminate the possibility of the results being corrupted or influenced by anything but the variable being studied:
For example, this is the methodology for a study on the efficacy of hydroxychloroquine on covid patients:
We conducted a randomized, double-blind, placebo-controlled trial across the United States and parts of Canada testing hydroxychloroquine as postexposure prophylaxis. We enrolled adults who had household or occupational exposure to someone with confirmed Covid-19 at a distance of less than 6 ft for more than 10 minutes while wearing neither a face mask nor an eye shield (high-risk exposure) or while wearing a face mask but no eye shield (moderate-risk exposure). Within 4 days after exposure, we randomly assigned participants to receive either placebo or hydroxychloroquine (800 mg once, followed by 600 mg in 6 to 8 hours, then 600 mg daily for 4 additional days). The primary outcome was the incidence of either laboratory-confirmed Covid-19 or illness compatible with Covid-19 within 14 days.
These were the results:
We enrolled 821 asymptomatic participants. Overall, 87.6% of the participants (719 of 821) reported a high-risk exposure to a confirmed Covid-19 contact. The incidence of new illness compatible with Covid-19 did not differ significantly between participants receiving hydroxychloroquine (49 of 414 [11.8%]) and those receiving placebo (58 of 407 [14.3%]); the absolute difference was −2.4 percentage points (95% confidence interval, −7.0 to 2.2; P=0.35). Side effects were more common with hydroxychloroquine than with placebo (40.1% vs. 16.8%), but no serious adverse reactions were reported.
Trump and other idiots/cacs kept trying to get people to rush and "just use" hydroxychloroquine because they knew it didn't actually work and would fail to be effective when studied. Most things people claim as "treatments and cures for this shit fall apart when actually studied. Hydroxychloroquine went from being a "miracle" to worthless for covid treatment: https://www.cnn.com/2020/06/17/health/hydroxychloroquine-national-stockpile/index.html
The American Journal Of Medicine Now Recommends HCQ For COVID19