Each new Room Lighting rule defaults to include a "Means to activate" and a separate "Means to deactivate".
For a simple button/light set-up are there any benefits/drawbacks with the default set up compared to just having a "Means to activate" toggling the lights on and off with a button push?
They are generally for two slightly different scenarios. Toggle is for using the same button; whereas, using the Means to Activate/Deactivate are generally for two different buttons.