Here's why:
* The Ghost's Focus: The ghost's primary concern is revenge for his murder, urging Hamlet to avenge his death by killing Claudius.
* Gertrude's Role: While the ghost expresses disappointment in Gertrude for her hasty marriage to Claudius, he doesn't explicitly demand Hamlet to punish her.
* Hamlet's Interpretation: Hamlet, driven by his own guilt and anger, interprets the ghost's words as an indictment of Gertrude's actions. This leads him to a complex psychological struggle, questioning her morality and his own role in the situation.
It's important to remember that the ghost's pronouncements are subjective and filtered through Hamlet's own internal turmoil. The audience is left to consider whether the ghost truly represents the will of the deceased king or whether Hamlet is projecting his own desires onto his father's spirit.