If you read the item carefully, the steps were dated from the Second Commonwealth, long after the Canaanites were a thing of the past. You could have guessed Greek or Roman, and . . . these two men opted for Jews on account of what they knew abotu the Sources. If you really want to know, I suggest you do a Carbon 14 dating, and then you might be able to prove your claim. Otherwise, keep your biases to yourself.
Report: Man detained at Newark Airport after entering secure area, prompting evacuation (Haaretz)
from the article: The ancient road to Jerusalem: the work of Romans, or Jewish pilgrims?