I think so? If I'm understanding this correctly...

1. If Yozora takes a sticker from someone not on her team, it counts for her team as long as she still has room.
2. The other team's score will decrease regardless of whether stealing a star increases Yozora's team score.
3. But if she takes one from her own team, it's useless.
4. Stealing will have its consequences no matter whom she steals from.

Is this correct? No one knows they can only have a maximum of 12 gold stars, right?