

… You can probably just pair a Joycon 2 with the deck to get the functionality. Since the steamdeck does not feature detachable controllers in its design, an external controller is needed. Any controller that connects via Bluetooth or other wireless standard pretty much works - Bluetooth as a standard even allows a single device to use different profiles.
If the feature for “mouse mode” is implemented in the Joycon 2 hardware, there should be little effort needed to make it work with the deck. If it is a proprietary host/device driver interaction, it probably uses standard HID signals because those would take a good amount of time and money to reinvent, so, reverse engineering everything needed for the driver should be fairly quick and easy for people who deal with Linux device drivers.
Personally, I tend to just use the trackpad on the Dualsense controller as a mouse. It works, no bother.
Midjourney makes money selling access to their model. Midjourney’s model, like those of OpenAI, has no value without the training data. In fact, the model is a derivative work of all of the works that it was trained on. The training data was obtained without license to resell or create derivative works.
While I hate how much the Mouse has screwed with IP law and prevented productive reforms, I hope they refuse to settle and get a judgement that bankrupts Midjourney and establishes the precedent that AI companies have to follow the law and make licensing agreements with any creator’s works that will be used. Can’t exist as a company if that happens? Boo-fucking-hoo. It’s not society’s job to subsidize the wealthy’s desire to run a business model that depends on violating the law and causing financial harm to artists.