There was a huge discussion about this a while ago at the other place.
Actual figures show that, technically, more fuel is consumed during operation of electrical accessories.
Just like, if one’s going to be stopped at a light for more than what was it, like 25 seconds or something, turning the engine off and restarting conserves fuel.
HAVING SAID THAT…
All the figures available showed the energy expenditure to be minuscule, AND they were all for automobiles, so the incremental amounts for motorcycle/scooters would be practically undetectable.