Responsible keepers can definitely keep them in their homes no problem. Some animals are more challenging to keep in homes, however, but I wouldn't give such a statement as you have ruling out all retic keepers.
Yes there are a lot of irresponsible keepers who impulse-buy the animals, but not every giant python keeper is like that.
I think that whatever you do, whether it is keeping them in your home or leaving that to zoos, even in the wild, we always have to remember that they are wild animals with instincts and need to be respected for the danger they present.
Not everyone is qualified or has a situation suited for keeping retics. Most people aren't, I would think. But while ruling out irresponsible-impulse buyers who don't respect the animal is okay, there are actual responsible keepers who do a great job and are very educated on said animals. I don't think there should be a blanket statement of "these animals aren't to be kept". Maybe "these animals pose a danger and aren't suited for most homes/keepers".
Having said that, accidents do happen sometimes (like with the OP). But how do you think experienced keepers became experienced in the first place? We all learn from our mistakes and I'm sure they will take more precautions next time.