Incense should always be used with care, whatever its length. But a shorter burn can be easier to supervise. Since it finishes sooner, you are less likely to forget about it while moving through the house or becoming distracted.
This does not remove the need for basic safety. A short incense stick should still be placed in a stable holder, on a heat-resistant tray, and away from curtains, paper, bedding, pets, and children. It should never be left unattended.
But for everyday home use, a smaller format can feel more compatible with a careful routine. You can light it while you are awake, nearby, and able to watch the burn from start to finish.
The simplicity matters. A ritual is easier to repeat when it feels safe, manageable, and natural.