As a really scientific person who also has a great love for animals, I need to agree with the opinion that you don't need to have love and passion for every snake to still be doing this right.
I have very little passion for my job, yet I come in every morning on time and perform my duties to the best of my abilities. I make sure everything I produce is quality and has been managed from start to finish with due care and consideration. I like to be able to stand behind my work with confidence.
I think the concern here is when someone takes a live animal as a business venture, and then does a half-fast, piss poor job. That's called an idiot for lack of a more forum appropriate description and the world is flooded with them. I don't see any reason to put up a specific fuss about idiots and lazies who also care for snakes.
General mistreatment of animals? I have a problem with this. It's DEFINITELY an issue that deserves judgement on a case by case basis, though.