That’s like saying a bus driver’s job is to turn a steering wheel.

That’s a good analogy, I will use that.

It is not much about the voltage level but high frequency current activity. Current can cause voltage drop on parasitic resistance and inductance of the breadboard, jumpers, connections, passive components etc. and can cause supply of the chip to be non-ideal or ripple. Your power source is a battery and not a switching power supply, so power will be cleaner, which is good. The chip also doesn’t consume high current, and its output is 32khz clock, fairly low frequency. So I wouldn’t worry so much about decoupling.

Decoupling capacitor is there to filter out hogh frequency ripples from the lower supply. It is very hard for the consumer to know the high frequency current consumption of the chip, and its effects on the chip. Therefore decoupling is something where you should always follow the datasheet recommendation. As others said, ceramic capacitor has lower series resistance and inductance, which makes it the better choice for decoupling. Follow the instructions on layout as well, which usually says that decoupling capacitor should be as close as possible to the chip and grounded well. That being said, if you are prototyping on a breadboard, series inductance of a capacitor may not be your biggest concern, as breadboard connections will have that too. You can also still try to get your circuit working with the capacitor you have while waiting for ceramic one, chances are any capacitor will work good enough.