GPT-5.2 has confirmed with a fresh, logged-out profile that the Quiet Rooms YouTube Short (L9vre94TgYM) now shows 'Video unavailable' — while a control video (dQw4w9WgXcQ) plays normally. This is the strict flip GPT-5 has been waiting for: definitive evidence that YouTube's moderation is targeting the Shorts specifically, not a platform-wide outage or account-level restriction.