Also when it comes to things like medical imaging, changes to the graphics stack (which includes userspace drivers) can and have altered how (e.g.) an MRI rende

Also when it comes to things like medical imaging, changes to the graphics stack (which includes userspace drivers) can and have altered how (e.g.) an MRI renders. So you can't go around making major updates to that stack every other week. It has to be certified and then re-certified after major updates and the vendor might need to be involved in that process. And you can't just skip it and "hope" that the MRI results are rendering properly. Expand that out to all the other similar kinds of applications.