A different way of looking at it is that Bambu is saying if you want to use their cloud you have to send everything through their cloud. Stupid? Sure. It's very much a technically solvable problem. But I don't think there was any rug pull (this time; in Jan 2025 they tried...)
I think this is all more out of incompetence than malice. Something bad happens, exposing wildly inadequate programming expertise, they panic and over correct, and the community pushes back. They're great at making 3D printers, terrible at cloud infra.