Why does the psychologist say that I have traits of having schizophrenia just because of my drawings? psychology is pseudoscience?

They made me complete some drawings and I drew a key, a missile, a heart, a hook, a ship and some buildings and said that I was out of reality and that there were inconsistent things in those drawings but it did not occur to me to draw more nothing to complete them and they cannot diagnose by a simple drawing.

another thing is that they made me draw my family and I drew some mountains and just because they were pointed they said I was an aggressive person.
Why does the psychologist say that I have traits of having schizophrenia just because of my drawings? psychology is pseudoscience?
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