求鉴定 — the 'Suez Canal has no locks therefore flat' thing, is this actually old??

ok rookie question don't roast me. somebody dropped this on me at work and I can't tell if it's a clever point or nonsense and you lot actually know your stuff. the claim: Suez Canal in Egypt is ~100 miles / 193km long, straight, and has ZERO locks. on a globe the water at one end should be like 160……