Star Fragment trees and other hacked trees were completely harmless in Animal Crossing New Horizons. They had no other purpose other than looking pretty and in no way furthered you in the game. Nintendo did this solely to help accounts not get banned/accounts but They could have took action to stop the reports from happening and protect the users. Myself and many other gamers who play Animal Crossing New Horizons want them back because they made our island look so much better and cause no harm to anyone at all.