"Of course snakes can be trained
Anyone who has the slightest doubt of that has never had a 'pet' snake
Anyone who has had a 'pet' snake that didnt bite, had a snake that had learned to trust humans
Therefore that snake had been 'trained' and had responded to the training"
I encounter many pythons each year up here on the mid-north coast, on the roads, around the house, in my sheds, around the aviaries, in chookyards etc, and I can honestly say that 95% of those that I need to handle to ensure their safety, are not interested in biting. Is that training? No - it's an inherently mellow nature, which is demonstrated by many wild, "untrained" snakes.
You seem to be suggesting that snakes in Australia are more "uncouth" or "uncivilised" than those in other parts of the world because our ability to keep them is so recent. That's a ridiculous assertion. The household "pets" you refer to are simply animals with an innately mellow nature from the outset, those which don't behave in an acceptable way don't get a gurnsey as a housepet. Who could tolerate an aggressive/defensive 20ft Burm or Retic around the house? And don't tell me all snakes can be turned into housepets with the appropriate "snake-whispering" techniques - some snakes just don't like people, here or overseas.
The difference between here and "there" that you refer to has much more to do with the attitudes of keepers here and elsewhere than it does with the behaviour of the snakes in different countries. Attitudes to reptiles, especially snakes, and the way they are handled in different countries, is strongly influenced by human culture. I wouldn't be too keen to champion the warm, fuzzy relationships between snakes & humans in places like Asia and Africa, where they become dinner or are skinned alive and have their gall-bladders ripped out far more often than they become welcome guests around the home. How do you think the snakey housepets feel about that?
You will find that exactly the same things are happening in homes in Australia as elsewhere, it's just been a more recent development in Oz, but it is not limited because our snakes are less civilised.
As for demonstrating animals of course snakes, like anything, can be habituated ("trained" if you like), but it is only those which show good attitude to begin with that get that opportunity. For a snake, biting humans has to be either a response to fear, or a last resort. Physical engagement, either aggressively or defensively, carries significant risk of escalation and injury or even death - many snakes INSTINCTIVELY prefer the path of least resistance, it's the safest option.
I agree with you that line-breeding for temperament is an interesting possibility - I spent time with Dave Barker in Texas in 1995, and he was already working towards temperament-related pairings.
Jamie