We've had to warn you about breaking the site guidelines before. If you keep this up we're going to have to ban you, so it would be good if you'd review https://news.ycombinator.com/newsguidelines.html and stick to the rules when posting here.
sometimes pointing out people are being dumb is completely valid - if you buy horse dewormer from a vet to treat yourself ineffectively you kind of have it coming
That doesn't make mockery the right approach either. But let's not kid ourselves that they were one friendly ear away from listening to the overwhelming majority of scientists. This is just one piece of a decades long conflict.
People were getting and/or stealing ivermectin dosed for horses, and using it on themselves