I clearly understand (almost) all you've written above - that's why there is "I'm ready to invest my time" instead of "shut up and give me everything for free, I said - NOW!"
"Talk is cheap, send patches." - really good point, sure, my support.
Probably something to support their own statements "On Debian 11 and newer, you're required to use the free and open-source Panfrost/Lima drivers" - in terms of just very basic AV HWA, not all the 3D HW shining peaks whistles?)