Adding meaningful alt-text is not only important for everyone using a screenreader and an essential #inclusion and #accessibility requirement. Alt-text is also searchable and used by filters. People who prefer to filter certain people and topics for mental health and other reasons can't filter memes or images without it. Please use alt-text and cw generously
Added bonus: with added alt-text you can find images in your own posts with "from:me" and people are more likely to boost your posts.
@chris However putting the hashtags in the content warning or alt text does not work, and prevents filters from locating it, so please people stop doing that.