I guess that could work.
You would then not know if anything is wrong and the unit cannot power up any longer.
Hence in my setup at the expense of some current draw, I prefer the unit to be alive and give periodic updates so I can know whenever it stops sending that something is wrong, or the door is open (repeated motion).
Sorry to digress but I think people are too stuck on the idea that everything has to be uber ultra low power or else... Yeah even my website has Low Power in the name although maybe I'd name it something else if I were to start over
Keeping the lights on has some benefit sometimes
And yes smart engineering and coding can achieve low power and "lights on". But there's always a tradeoff. Often it's not worth the tradeoff (effort and money and time spent).
Everyone has to decide if that tradeoff is worth to bother.