It's not, Facebook processes the photos on their end and now also apparently feeds it to generative models to offer something (don't remember what exactly, managed to avoid this). At least that's what some options said last time I went exploring the app's settings page.

no, the "something else" was sending far more photos to their servers than the one they were, in the methaphor, "editing".

so you're saying it's ok and consensual if I asked to get a drink from your fridge, and just ate all your food as well?