Oil is typically not purchased directly from an oil producing country, but on an exchange where the source of the oil purchased is unknown and the seller has little say in who buys on the exchange.
You are dispensing useless knowledge that ignores the point of my post.
You are missing the point.
Yes, Israel can currently buy oil on the open market and get it delivered. In peacetime. In a conflict where Muslim countries threaten to sink any oil tanker trying to make a delivery to Israel, or pull out of any exchange which dares sell to Israel, it would be different.
The agreement says the US will get oil to Israel if they need it, no matter what.