Gaze tracking isn’t necessary for this. You can track how long a user stopped scrolling through a feed on items classified as X, then build confidence by compar

Gaze tracking isn’t necessary for this. You can track how long a user stopped scrolling through a feed on items classified as X, then build confidence by comparing the frequency of stops on X classified stories over time. Also, for really weird stuff, it’s probably enough to blackmail a person just by showing that Weird Thing appears in their social feed in the first place.