OK BUT CONSIDER THIS
Any episode before Too Far, every time Peridot insulted someone she was actually trying to insult them and hurt them. Either because she was angry or scared, either because of Homeworld’s prejudices, either because the Gems where her enemy.
But this episode was different. Amethyst thought that her making fun of people was funny, and so Peridot she was trying to impress her. Amethyst encouraged her to be rude.
But then when Amethyst find herself being the target, it wasn’t funny anymore. How was Peridot to understand the difference, expecially since she wasn’t trying to insult her at all. She was trying to give her a compliment. “You are strong even if you are defective”. Complitely insensitive and horrible to say, but Peridot had no clue of that. She touched a soft spot, Amethyst is always been super self-concious about her appearance and origins.
They were both in the wrong, and hopefully they both learned from this.