It does work, but it still feels a little side effect if you keep it on all the time.
Mapping a shortcut key feels a bit “redundant.”
Is there some kind of automated thinking?
Exactly how many rows to move up/down is more useful and feels suitable for small movements.
Line numbers are generally not used much, and large movements can be scrolled or
text-objectMove, press a few times and you are almost there.
How to use it depends on personal preference.