And how does the kernel affect you in any way. Most of the internet runs on old kernels because servers user long term stable kernels anyway. If they ux is good the kernel shouldn't be a problem to you
1. UX: most of the time kernel updates don't affect the user experience. However, from time to time there are scheduler updates which can have positive effects.
2. Security: Being able to run the kernel with the latest security updates is evidently very important to have a system that is not vulnerable to newly discovered exploits.
3. Dependencies: As discussed already, some software components like the Android itself requires certain kernel features and therefore certain versions to let you run the latest versions of the software.
Btw. even LTS kernels are just supported for six years or so.
My biggest problem with the situation is, that 99% of the software is open source (Android incl. the Linux kernel) and just a few vendor-specific drivers make it very hard to upgrade the kernel and therefore the system.
