It is difficult to say specifically what George Washington did not like about people as opinions and attitudes can vary. However, as a historical figure, Washington tended to have a reserved and formal demeanor, and he was known for being cautious in his interactions with others. He may have been critical of people who were overly flamboyant, impulsive, or lacked integrity. Additionally, Washington was known for valuing honesty, virtue, and moral character, so he may have disliked dishonest or deceitful behavior in others.