The FreeBSD desktop exists, it is called “Mac OS”.

Linus Torvalds used the GPL for his kernel, forcing companies to release the source code if they improve it and distribute it. The main userland was a lot of GPL licensed GNU software for a very long time, with a similar effect.

The BSD folks, on the other hand, decided to give everything away, by using much more “liberal” licenses. Apple took the BSD base, bolted their UI on top of it and gave almost nothing back. That would not have happened if BSD was GPL licensed.

Why do you need SISR for this? If he game is receiving input from the real stream controller (as you wrote), why not just disable SISR and go along with that?

Anyway, what you can try is to disable one of the controllers in the “Game Controllers” section of control, as outlined here: https://github.com/AntiMicroX/antimicrox/wiki/Methods-for-Disabling-Joystick-Reading-in-Linux

That website also include some more advanced methods, but I don’t think they will apply to your usecase, unless you want to run SISR as a different user.

Or you should. This is called Parkinson’s law, first stated in 1952. https://www.bbc.com/worklife/article/20191107-the-law-that-explains-why-you-cant-get-anything-done

This has observed especially with the advent of “robots” for household tasks, e.g. the dishwasher or the washing machine. Before these machines existed, wifes spent about 51 hours per week cleaning the home. After the machines where there, they spent about 52. See: https://www.umb.ch/en/blog/news/detail/parkinsons-law-and-our-daily-quest-for-more-time