Here’s a good flight plan. Let’s fly in front of airplane traffic taking off and landing at an airport with a margin of about 300ft clearance... and at night too.
Oh and assign a low experience pilot.
Who created that flight plan?
“Who created that flight plan?”
The people in charge of the airport, the most crowded one in the USA. It has been questioned by others since the accident. Many thousands of flights managed to miss each other, so there’s that. You can set the rules anywhere but if pilots don’t follow them, well, you know what happens.