@CatHat @CStamp @RachelThornSub This is neither possible or desirable. I just read an article on Penny Oleksiak and how she was banned from competition for two years. It had a picture of her; should it tell me what colour her shirt was? Or if she was wearing a hat? Or if her shoes were visible in the photo? Maybe sighted people could estimate her breast size, too; where should we stop providing information that a sighted person could perceive? "Only the important information," you say? If I'm sexually attracted to Canadian Olympic swimmers, her physical attributes might be what I consider important information. This is a silly standard, and holding writers of alt-text to it is why so many people think they're bad at writing alt-text, and are scared to try.
The questions that matter are: why did the author include this image? What did they want to communicate to the reader by including it? What does the author think is important for me to know about it? The author can't know me and my interests. But they do know themselves, and they know why they included that image in that place in that article.