bruh Do you not remember, the baby fight. Everyone would have died in the dream if he hadn't been smart enough to carve it in his arm. He also gave the where abouts of dio in the first episode. Making it possible for the crusaders to find dio in egypt. Next thing he did was tell avdol, using fire on a plane could make it explode, preventing avdol from killing everyone on board in the tower of grey episode. Jotaro couldn't even catch that fly. Next is during the J geil and hol horse episode, He grabbed Polnareff, preventing him from being killed from being stabbed by the hanged man. After that, he told Polnareff "there is no world inside a mirror" giving Polnareff more insight on the situation. Allowing him mostly and Polnareff to defeat hanged man. Oh also if he hadn't thought of throwing the coin in the air to avert the eyes of the people begging for money they wouldn't have been able to cut j geil. Next is the ending battle, he prevented Joseph from dying. Not only that but he left clues to the fact

dio can stop time

valid argument