The view that there's no need to keep the hands on the TL follows the line that the aeroplane will look after you. Dream on!
A guy I know took off recently and hit wake turbulence shortly after takeoff. His "wonderful" A320 went into Alternate Law and stayed there until it went into Direct Law when the gear went down for landing. Reason enough?? Dozens of other good reasons too. Airmanship we used to call it.