Who says it was younger people?
"but did not tell drivers to cross the main runway in-between."
"Once the drivers reached the runway and saw the terminal on the other side, naturally they drove straight ahead and crossed the runway."
The map put them in the wrong spot, and apples being ridiculously slow about fixing it, but it doesn't sound like it was the directions. More like they got to where the directions said to go. They stopped. Weren't where they wanted to be, looked around, and then thought "oh there is the terminal, I'll just drive across a runway".
The Apps bad, but this is all the users. if you're using turn by turn directions to get around in something like an airport anyway that's enough evidence. Maybe you use it to assist you getting into the airport, but once there you read the signs.