Try explaining to them that, during the 41 'funeral', the MSM kept emphasizing that AF1 is only AF1 when POTUS is aboard.
Then show them the Q 0 callsign AF1 took WHILE POTUS WAS ABOARD and flying to MO.
https://twitter.com/CivMilAir/status/1071065348546457601
https://twitter.com/POTUS_Schedule/status/1071056861724639233