#They're experiencing they're first ever friendship and it's starting to affect their moral views okay

[ifeellikeameowster]

In For The Future it's hinted that The Collector has already started to somewhat learn what friendship is through spending time with King. In particular This Scene:

Where Terra is smart mouthing him. He only looks mildly irritated. More so at the fact that she isn't getting her "role" right. UNTIL she insults King.

Where he's surprised and then they look over At King.

Before getting mad on King's behalf. Which show's that they consider King getting insulted a big No No. Meaning he doesn't want anyone possibly hurting King's feelings with their words.

And then, instead of turning Terra into a doll/puppet for not "playing right" or "being a convincing enough Eda", they specifically state that:

It's because she's being was Mean.