Link to mirror original article, now also struck down from waybackmachine: https://ddosecrets.com/wiki/Appin_Uncensored
‘Could have’ is due to the range of potential estimates. The confidence interval was between 6420–20294 deaths.
If you read the original study, those causes are included.
The hazards here were related to passing around doses, improper prescriptions from disreputable doctors, and not seeking out actual treatments for covid. If you have certain conditions and medications there can be side effects and interactions that harm health, but that your doctor should have considered. Some people who really needed hydroxychloroquine for legitimate uses like yours had trouble getting it because of shortages due to morons rushing out to get it.
Many people seem to be unable or unwilling to confront the cognitive dissonance of there not being a good guy to root for. They have to deny some war crimes to make things simple for themselves, so it’s a simple case of good vs evil
Sorry, Politico is a US-focused publication. So they focused on Americans, but you’re right that it has global implications