Where did you get this idea from? Seeing that the OP has a problem somewhere (modules/dkms, etc), it’s a reasonable hint to make. Plenty of ‘newer’ hardware will run fine on the older drivers; newer drivers could introduce weird behavior(s).
I have modern HW…LTS kernels run absolutely fine.
ETA: An LTS kernel != $distro-LTS (ie: ubuntu-LTS).
Yes the LTS is just a version of Kernel that keeps getting normal updates during many years, currently it is 5.4 soon to be 5.10. The assumption it is for old servers is kinda weird I agree lol.