To be fair, his point that it's dangerous stands. They do create super bacteria [1]. Of course, with bacteria, you'll experience it through an unlucky lottery rather than a pandemic.
How's it ignorant? I'd love for you to elaborate on that. Keeping stressed animals in close proximity in filthy conditions and packing them full of antibiotics is not good for anyone (especially the animals). It's a disease breeding ground and all the antibiotics breed antibiotic resistance.
