LOL no, the grills are very sturdy and perfectly round, it's the rubber gasket under which the ends of the wires are tucked that makes the imperfect circle. Much better look than clamps for my taste, and if you're really into a clean look and are not likely to take out the woofer in the forseeable future you can cut the wires short.
I get it. She often told me my rubber gasket was out of round.