It's difficult to fault veterinarians for not treating unvaccinated horses in locations where hendra is endemic. It's not worth a human life, to provide palliative care to neglected livestock. It's also not worth getting prosecuted. Apparently Department of Workplace Health and Safety doesn't want these animals treated at all.
also please correct the link to: https://www.theatlantic.com/science/archive/2018/07/anti-vax...
It seems perverse for the link to just point to itself like this.