[ponker]

Here’s my guess: there is an ML model running at Instagram to prioritize content shown to users in the service of some target: engagement, revenue, shares, etc.

This model takes many of the features of the image into account: the account posting, the account’s previous likes, the number of existing likes and the time frame they were received in, the GPS location of the poster, etc... and possibly... deep learning features from the image itself.

If the model has the deep learning features... it will take all of 10 minutes of IG-scale data to overpromote hot naked people. It will also learn all of their userbase’s biases, and underpromote content from black people that isn’t “stereotypically black,” overweight women, short men, etc.