The kid was just repeating stuff that the air traffic controller was saying. At first glance it looks like a regular overreaction by the media.
True, but in air traffic control when things go wrong - averting a disaster can require a split second reaction. Air traffic controllers requires many years of training and supervision, it's not something that a child can safely mimic.
There was an incident at Heathrow in 2001, where had a British Airways Boeing 747 on approach had not already begun a go-around manoeuvre about a second before the controller told him to a collision may have occurred.
Take off and landing - statistically are the most risky times to be in an aircraft.