The CDC estimates that _at least_ 30% of all anti-biotic prescriptions are inappropriately prescribed. I'd wager an over-prescription of Ivermectin (that by some unknown characteristic appears it would save massive numbers of lives) isn't likely to evolve parasites (which evolve much more slowly than bacteria to begin with) to be resistant in a dangerously meaningful way given what we see with bacteria resistance.

This is of course just a gut feeling and not a studied understanding.