Platform selection usually gets settled by whichever channel posts the highest engagement number, which is why a cross platform influencer marketing agency inherits so many campaigns pointed at the wrong surface. The benchmark data makes the reasoning look sound. Median engagement across eighteen industries runs 2.01% on TikTok, 0.30% on Instagram, 0.21% on YouTube, and 0.03% on X, a spread wide enough that the decision appears to make itself. Instagram…