Scott Pilgrim is one of the worst things to ever exist. Someone looked at Penny Arcade's "What if video game logic worked in real life WHOOOOOOAH!" and thought it would be even better dousing it in virginal chud garbage.
It deserves to be put on the same level as Forrest Gump for reviled movie hall of fame.
Cult movies get around. If anything they have greater impacts than most films that had successful theatrical releases. Look at John Carpenter's cult classics like The Thing and They Live.