You lose a little efficiency, which really isn't much of a problem in mini-mashes. Most of the malt comes from the extract. Slower sparging gives the sugar more time to dissolve. I have this huge grain bag that I use for mini-mashes. After the mash has cooked, I add all of the sparge water to the kettle, stir the grain for five minutes and lift the bag out.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk