Snowball is still being blamed for problems as a way for the leadership, particularly Napoleon, to divert attention and scapegoat him. It helps maintain control and distract the animals from the failures of the current leadership.rephrase as a 9th grader

The leadership, especially Napoleon, keeps blaming Snowball for problems to take focus away from their own mistakes. This tactic helps them stay in control and makes the animals forget about the failures of the current leaders.