In vitro is not in vivo
Your belief in ivermectin as a cure all is borderline zealotry. There is no evidence in 50 years that it is an adequate treatment for viral infections. Parasites, most certainly.
Just because is has modest or less antiviral activity in a Petrie dish doesn’t cross the chasm to treatment. No matter how much you wish it were.
Of course. Bio-chemistry is just a lot of hooey(sarc.)