Well, these got a hell of a lot more worrying.
Gem Drill speculation
I feel that this scene is the Cluster itself trying to talk to Steven, each shard representing a different Gem that was shattered.
It’s kind of like Steven communicating with Lapis during his dream in Chille Tid.
Super Watermelon Island, Gem Drill, and Same Old World episode descriptions from French site
Super Watermelon Island: Steven has a dream in which he’s a Watermelon Steven on Mask Island. Everything goes well until he sees Malachite emerge from the ocean and break free of her chains. Steven immediately notifies the Crystal Gems about this, which makes them head to the island to stop Malachite from harming the Watermelon Stevens.
Gem Drill: After the Crystal Gems get stuck on Mask Island, it’s up to Steven and Peridot to use the drill and head to the Cluster before it emerges. Steven has doubts and wonders if there’s a way to take down the Cluster other than destroying it.
Same Old World: After Lapis regains consciousness, she tells Steven that she wants to leave, but has no idea where to go. Steven decides to help Lapis look for a new home by flying to different places on Earth.
THEY’RE IN THE CLUSTER