What it means for your design
The recommended setback measures 5 feet to a point 1 foot from the inside wall of the pool, not to the edge of the deck. How that lands on your lot is a question we put to the city with the drawing in hand, once we know the adopted wording.
If the barrier-or-cover rule is in force, it's real design freedom: a powered safety cover meeting ASTM F1346 can stand in for the pool fence under the state code. But a cover only protects when it's closed. We don't rely on it alone: every MP pool gets an automatic safety cover, and the yard is fenced all the way around with self-closing gates, closed against the house. No single layer is enough on its own.
Pool equipment and other accessories have to meet the accessory setbacks too, so the pad doesn't get to sit on the line just because it's small.