And medical establishment experts on the topic were (and are) reluctant to acknowledge that many people in the US carry sub-clinical parasitic infestations, some for 40 years, that only manifest visible symptoms when some condition weakens their immune system.
The only argument against using ivermectin to proactively "de load" your body of the potential presence of parasites on a regular basis is not safety of Ivermectin, or what's best for the individual, but "for the good of the population overall".
By playing along with the disinformation about Ivermectin risks, portraying it as an animal only medication, and supposed lack of useful purpose, they robbed individuals of the agency to decide for themselves
"Lying to them for their own good".