"At times" being the key phrase here and that's only when the Goblin isn't around.
I can say the same of Octopus.Conceptually, I don't think there's anything about Green Goblin that makes him Spider-man's archenemy,
That's the number one criteria for being an archenemy.it's just that since he killed Gwen Stacy most writers seemed to choose him as the one with the most personal vendetta.
Even in the Golden Age, I fail to see what would make Eviless fitting for archenemy status.