I don't follow.
Johnson planned and executed an unauthorised addition to a flightplan he otherwise stuck to like glue, but nevertheless had planned that addition in secret and went in knowing exactly what he was doing. Asseline got lost (not his fault) missed his TOD waypoint, tried to fudge his descent profile to catch up and ended up in the trees. Equally importantly, Johnson was not carrying passengers.
Quite what this has to do with AF447 is beyond me.