to make sure we are on the same page. I open Update Manager, click on View then on Linux Kernels.

in there i have many kernels.

I have for example

6.17 and when i click on that it shows

6.17.0-42 End of Life

6.17.0-41 End of Life

and many others that show End of Life.

I just watched https://www.youtube.com/watch?v=PKQ0Ctu3NZs&t=172s and he said any of the kernels that show End of Life I should remove them. Is that always true or is there a reason to keep those kernels?