Did I and others not mention why it matters? Having a binary blob that works only with some kernel version means that you forego the benefits of potential updates to the parts that are Free Software: that binary holds you back and keeps you on that specific kernel version (and any dependent user space stuff) until you get tired and make an excuse about buying a new phone.
It has bothered me and others in practice when we have had to put up with binary GPU drivers for our workstations, where someone has to go scurrying off to Nvidia's Web site to get something that might work, and then go through an installation ceremony that would be avoided if only Nvidia's stuff were a proper part of the system. So if you fail to see practical inconvenience as anything to be bothered about, I'm sure you have a long and happy career ahead of you in front-line support. Just remember that the inconvenienced users aren't enjoying it as much as you might be.