This was the final episode of 2015 before the show went on its winter hiatus.

This is a pivotal moment for Peridot’s "redemption arc." She experiences guilt for the first time—a feeling she describes as feeling "small"—and makes her first genuine effort to apologize and understand others' feelings. Cultural References & Trivia

This episode serves as a lesson on the boundaries of humor. Peridot, eager to fit in and seeking approval from Amethyst, begins mocking the other Crystal Gems. She "goes too far" when she shifts from making jokes to listing Amethyst's biological "defects" from a clinical Homeworld perspective, unaware that she is touching on Amethyst’s deep-seated insecurities.

A scene where Peridot jumps on Amethyst is a visual reference to Tigger bouncing on his friends.

For more detailed breakdowns, you can check the Steven Universe Wiki or deep-dive discussions on r/stevenuniverse . Steven Universe S2E24 "Too Far" Recap - TV Tropes

It is revealed that Amethyst stayed in the ground 500 years too long, resulting in her being an "overcooked" and smaller version of what should have been a standard Quartz soldier like Jasper.

She identifies the injectors at the Kindergarten as "Era 1" models.

Peridot introduces significant world-building details, such as: