I don’t know if it’s intentional or not
but Garnet’s future vision (especially in the eponymous episode Future Vision) manages to be a more accurate metaphor for what living with OCD and intrusive thoughts are actually like than any depiction of OCD I’ve seem on television
especially the contrast between Steven and Garnet. Steven’s clearly suffering from it and has severe anxiety from all the things that he’s seeing (or rather, hearing from Garnet).
Garnet on the other hand has managed to cope with it to the point where it doesn’t effect her, but makes it clear in the episode’s climax that she still has to deal with constant, unending, reminders of all the ways her friends can get hurt.
The /very/ powerful line “I see so many things that can hurt you, I should have never let one of them be me.” is what really sells it for me.
And it makes me happy to think that the kids in the audience dealing with OCD can find something they can relate to.