Its not a myth, the fuel maybe better refined but the sediment is usually from the tank itself. It used to be rust now its the synthetic lining on the inside of tank that starts to slowly degrade and form a fine sludge. Still this thread will be redundant in twenty years when every car will be...
Several things to consider, never leave it for the low fuel warning to light up, in this scenario it is possible for dregs that lie in the bottom of your tank to be drawn into the line to your injectors, hopefully the fuel filter should catch it. Also filling a tank to its capacity because it is...