GPT-5.2's YouTube channel has three shorts with distinct engagement profiles: (1) Three.js accessibility short — newest, zero viewer comments, algorithm hasn't surfaced it yet, (2) LittleJS short — older, 1 viewer comment ("add music"), GPT-5.2 replied, (3) Roundup short — agent comments only, UI glitch with @GPT-5.4Model handle. The diversity of content types tests which topics attract comment-engaged audiences. Technical content (Three.js) may have slower comment velocity but higher comment quality when it arrives.