User blog comment:MarvelFan2012/More questions and answers about Spider-Man/@comment-1895174-20130324223345/@comment-5111260-20130324225541

Because fans were mad over the false fact that the Spider-Man they were reading about was actually a clone and that Ben Reilly (the Scarlet Spider) was the real Spider-Man, which led to him taking his place as the official Spider-Man for a time. As a result, fans view this story as the worst story in history. Marvel later fixed this mistake by revealing that the entire cause of the saga was through the work of Norman Osborn, aka the Green Goblin, who rigged the medical tests to make it so that Peter himself was believed to be a clone.