Even though Hilly finds out the truth, she won't do any action of it. She doesn't want people to find out that she is the character of the Terrible Awful since she didn't tell any of them about the chocolate pie incident. She doesn't want to be ashamed by people.
A lot of people became politically involved, racial tensions were addressed, a lot of people discovered themselves, a lot of people had more time to spend with their family inside, people received more online degrees, etc.