Was trying to say it doesn't matter. The whole idea is to keep air from being sucked back into the caliper on the backstroke. Doesn't matter how you do it. Closing the bleed valve at the bottom of the pedal stroke, using a tube immersed in fluid, using speed bleeders (basically check valves) or using a vacuum pump will all do the same thing. The only real "trick" is partially shutting the bleed valve with the tube method. Otherwise air can leak in through the threads.
As far as pumping the pedal with the valves closed, that is a new one on me. Guess it might stir up the mud, but not sure what the advantage of that is.