I have the 48 quart Icecube that works fine for mini-mashes up to barleywines, but I use a huge grain bag and batch sparge. So, a shallow grain bed isn't a problem, as it might be if you use a manifold and fly sparge.
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