[observationist]

The key conditional is a question that is answered in the research already done, and it's "yes, sexuality correlates to facial features." The more facial features you track, the better the granularity, the more you'll be able to correlate. How you smile, your gaze, your presentation, and so forth all plays into facial features. These are going to culturally tie into expression of sexuality, and you might as well wear a sign for AI proclaiming your sexual preferences. Changes in facial features from genetics, hormonal levels in development, environmental factors, and other peripheral effects will correlate with sexuality as well, but not as strongly as the behavioral ones. The inherent features are context against which the behavioral features play.

It's not a physiogonomy trope or a statement that straight people have different fundamental facial features, that they grow differently - it's the macro and micro expressions, the behaviors, the style and presentation choices, and how those intentional active features play out on the substrate of the individual's facial structure. A small video snip is going to communicate a very large amount of information. TikTok could do this - and then create another model that inferred psychology and sexuality based on watch patterns, and yet another model that describes how different types interact and network, and yet another model that describes how information propagates through various networks, and so on, and so forth. Through differential analysis and repeated refinement of various models, you get to some very intrusive and scary places.

Anyway, /ramble. We need a digital bill of rights.