Very unlikely. More accurately, "the oldest known settlement."
I found the passage about the Chalcedonians being blind--it's in Herodotus, not surprisingly. It was said by the Persian commander Megabazus (4.144):
This Megabazus left an immortal memorial of himself among the Hellespontines by an expression he used. When he was in Byzantium, he learned that the Chalcedonians had founded their city seventeen years before the Byzantines had founded theirs. "The Chalcedonians must have been blind at the time," he said, "for they certainly would not have chosen a worse site than a better when they had the option--unless they were blind." (Trans. David Grene)