It really depends on your hardware and how you update.
If you use the software update application (gui), you may n not be kept as current as someone who uses the terminal.
sudo apt update && sudo apt upgrade && sudo apt dist-upgrade
in the terminal. I did not add the yes flag so you can read what is being updated and choose whether to go through with it.
I didn't read the article, as it really had no bearing on this discussion, you can open a new thread if you really want to attempt to install it. If the dependencies of the new driver requires jammy, not focal (our current version), you would not be able to use it anyway.
Many have received updates to -82 kernel. This isn't unusual as it depends on hardware and the software you use. You aren't being left behind. Your system may have no benefit from the updates based on hardware and library use.
While optimizations can help, a newer driver may cause issues or not even be relevant to your card. Those new features may not even be supported by your card, as it is older than what is just being released.
This is a rabbit hole that never ends. If your system works and is stable, than do you really need the update?
Are you missing something? Possibly, but it may not be such a benefit that it is worth chasing, wasting time, space and possibly crashing your system before its all included.... for a two second increase in graphics processor computation?! 300ms increase in DRAM communication?! These aren't actual numbers for your hardware, it is a realistic representation of the optimizations you receive.
Very few updates make that much of a difference. If they do, they are normally included in the kernel updates to benefit everyone (AMD graphics drivers are included in the kernel) .
You don't go and get a new car every two years, do you? You don't get a new phone every six months, do you? You don't buy a new computer every time a new processor or gpu is released, do you? Then why do you need the bleeding edge in software, especially since new software releases (OS systems included) have the most bugs. Wouldn't you prefer the system that has an OS that boots, without issue...a computer that recognizes and utilizes your hardware as it should... runs software without issue?
You could switch to a rolling release, but those are usually reserved and meant for developers. They know how to fix the issues they run into, sometime by recoding something in the kernel and recompiling it.
You are not missing anything. Don't let this get to you. Those drivers will most likely install themselves in Zorin 17, which will be based on jammy. Until then, enjoy your system, compute, learn and don't feel like you are being left out of something when, instead, you are being included in one of the most responsive, stable and reliable Linux OSs available.