While perhaps not a good example as to why cohabitating snakes is a bad idea in general, I would say it's a good example to present to newer snake keepers who think cohabitation is a good way to save money/space. Bear in mind that many new keepers come to these forums thinking mouse pinkies/fuzzies are a good sized food to have their hatchlings on, and I have corrected countless people that think any snake species should only eat once a month if that. Now imagine those inexperienced keepers housing more than one of these snakes together, even in conditions that otherwise might be able to support two or more snakes?
Can cohabitation work? Sure. I don't do it, but I acknowledge that some people do so successfully. Do I think new keepers/those who don't know what they're doing should give it a try? Absolutely not. If someone comes here asking a series of questions about how to keep their new BPs and one of them is can I keep them together, I'll say no every time.