I think I owe this an update.
Scott Alexander puts the final nail in the coffin of Ivermectin working against COVID-19 with his “Ivermectin: Much More Than You Wanted To Know“.
Secondly, Arieh Kovler has made a thorough and a bit tongue-in-cheek categorisation model for COVID-19 conspiracy theorists in “Covid Conspiracy theorists: A spotters’ guide“. I think he missed the grifters category but elsewhere he argues that there are grifters in all the categories.
Finally, I have a suspicion that it is only us lay-people who were really surprised that it was possible to create a vaccine as quickly as was done with COVID-19. Considering we now, after 2 years have 24 approved vaccines, 8 of which are approved by WHO, it should be rather obvious that the future potential for new vaccines is huge.