One of your remarks regarding attribution and compensation goes back to 'Xanadu' by the way, if you are not familiar with it that might be worth reading up on (Ted Nelson). He obviously did this well before the current AI age but a lot of the ideas apply.

A meta-comment:

I absolutely love your attention to detail in this discussion and avoiding taking 'the easy way out' from some of the more hairy concept embedded. This is exactly the kind of interaction that I love HN for, and it is interesting how this thread seems to bring out the best in you at the same time that it seems to bring out the worst in others.

Most likely they are responding as strongly as they do because they've bought into this matter to a degree that they are passing off works that they did not create as their own novel output, they got paid for it and they - like a religious person - are now so invested in this that it became their crutch and a part of their identity.

If you have another train ride to make I'd love for you to pick apart that argument and to refute it.