Their structure differs from toilet paper and can interfere with moving or narrow parts. Small size does not make them acceptable waste.
What the observation means
A single object can create a different obstruction from excess paper. Its disappearance from the bowl does not establish that the system is clear.
A useful next step
Dispose of such items through an appropriate bin. If a known object entered and the unit now sounds or drains differently, stop using connected fixtures and report it. Do not use a plunger, wire or chemical treatment to force it farther through the installation.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.