To put it crudely, it's about how it started vs how it's going - initial distribution is expected to have been uniform with small fluctuations that over time we

To put it crudely, it's about how it started vs how it's going - initial distribution is expected to have been uniform with small fluctuations that over time were exacerbated by gravity resulting in the Universe we see today. A ring of galaxies implies some unexpected very early structure - like seeing shapes in an explosion.