My answer to that question would not quite be a categorical yes or no. For example, there’s a difference between a manually taken selfie and a complete raw security camera feed.
But I do agree this is straying from the original topic a bit. Since the top-post use case is explicitly one where you’ve already decided you’re not comfortable posting the original photo publicly, I feel like the general acceptability of posting photos is mostly irrelevant here? I think a more on-point justification would be talking about why it’s more acceptable for an AI to see the original photo than for your general audience to see that same photo.
(To be clear I don’t personally have a major problem with this practice, at least as you’ve applied it so far, although I also don’t think it’s really added or subtracted much from my enjoyment or understanding of your posts so far. Mostly I just don’t find this particular justification to be convincing.)
Perhaps one common theme in the objections you find more compelling is that existing systems of accountability are unprepared to effectively allocate responsibility for outcomes that are (at least partially) generated by AI?