I believe the way it should work is that no light.turn_on should be required if you do addressable_set, I read somewhere at ESPHome docs that any output light is considered the light is on.
With this kind of lights, turn_off should do brightness to 0% and turn on brightness to the last non 0% value.
However I did not design this and I don’t know the implementation details.
Did you find any docs that explains how this works?