An underrated accessibility feature on Lemmy is the ability to add alternative text to images in Markdown. The image above will be read as "photo of a snail" by screen-readers. The Markdown for that one is:
As you can see, the alternative text simply needs to be inserted between the two brackets, which are empty by default when you insert an image.
I don't disagree, I just think that for devs that is obvious, so unless regular people give feedback in places where dev see it's unlikely to improve.