As opposed to people who prefer cancer drugs?
That's about an equally flippant, equally bullshit response. Ivermectin isn't just "horse dewormer", it's a pretty broad and widely used anti-parasitic, which when it was discovered in the 70s was referred to as a "wonder drug from Japan" because it works in a wide variety of mammal species (including humans, often being used to treat scabies or intestinal worms) against a wide variety of parasites.
Right wing idiots spread the idea that an anti-parasitic is an appropriate treatment for a viral infection, but that doesn't change that you should respect the fucking drug and all the good it has done in the last half century.