I think the real ethical issue from the author's perspective is not whether or not the drug should be allowed to exist and be prescribed even though it causes s

I think the real ethical issue from the author's perspective is not whether or not the drug should be allowed to exist and be prescribed even though it causes some deaths, but rather the loss of informed consent (a quiz that purports to make a personalized recommendation but actually just always recommends the drug) and the skirting of legal regulations (the country forbids marketing drugs to consumers but this supposed "general information" site is actually stealth marketing).