Introvert or Extrovert When Someone Helps Waiters Clear Plates? Psychology Explains more details in comment

Common among extroverts too (motivation: engage socially)

Extroverts approach the situation from the opposite direction—helping because they enjoy interaction, kindness, and collaborative energy.

Therefore, the behavior itself does not determine personality type.
Instead, the reason behind the behavior reveals more.

4. The Key Psychological Indicator: Internal vs. External Motivation
Psychologists emphasize that introversion and extroversion are defined by where a person directs their mental energy.

Introverts: calm internal motivation — “I want to feel more comfortable.”
Extroverts: outward social motivation — “I want to connect with others.”
Two people can do the exact same thing, yet their inner reasons differ completely.

5. What This Gesture Really Shows
Helping waiters remove plates, above all, suggests that a person is:

empathetic,
considerate,
attuned to others’ workload,
and socially aware.
Whether introvert or extrovert, this action often reflects emotional intelligence and a desire to maintain a pleasant atmosphere.