Yes, he’s an atheist, so he’s got the right idea about mythology. But he sure didn’t replace that aspect of his worldview with a love of science.
No, when you deny the germ theory of disease, you’re proving that you’ve come by your knowledge of this world by ignoring vast tracts of human progress and ignoring equally vast tracts of evidence derived from objective observation of reality.
Being right about religion doesn’t get you a free pass. You don’t get to urinate on the only worthwhile human endeavour just because you happen to believe that all humans are cynical and profiteering, without earning my ire.
The Youtube video poster, C0nc0rdance, notes in the details for the video that he messed up the bit about osteopaths. Evidently there’s as many quack osteopaths as there are chiropractors outside of North America. But for that, I can give him a pass, since he noted as much.
(And it’s an easy mistake to make, considering I know there are still quack chiropractors in North America who don’t just provide physiotherapy, but rather believe they can fix everything by cracking your joints. Including your neck. Which has directly led to people being paralyzed or dying. But, you know, what’s the harm in chiropracty? Or for that matter, osteopathy?)