I have lts kernel and normal linux kernel on my system (vanilla Arch). I know that you can hold back updates by editing the pacman.conf file. I setup so that my system only gets updates for the lts, and I run lts as the default kernel.
The lts delta updates for lts come briefly every 6 days. The recent one is 5.4.70-1 and changes on the repo involves changing some hash and version number. After a kernel update, you reboot. I had to do this every time after a kernel update, otherwise my USB wont recognized.
I dont really mind reboot, but I have all my applications open on particular workspace (firefox tabs, emacs windows, some terminals showing processes…etc.) So, upon reboot, those will be closed.
The way I save battery on my laptop is to unable suspend then hibernate feature; so my laptop would shutdown and suspend to disk when left for too long. This way, I save battery and all of my applications are where they should be.
So, I plan to hold back the lts updates as well. I also plan to only update the applications that I care about.
For applications side, I understand that I will not get the latest features from apps (firefox for example).
For kernel side, will there be any disadvantages? Will it make my system more vulnerable? Of course, I dont plan to stick with a particular lts kernel forever. I like to hold back and update whenever I feel like it; instead of every 6 days. My system works fine currently.