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.
Markdown is such popular markup language that I think it's almost assumed that people know what it means.
I'd disagree there. Some people might know the basics, but expecting them to know the complete ins and outs is a bit silly.
Especially since not everyone joining Lemmy would be that tech-inclined, and most of their prior experience with markdown might be the implementation that Reddit uses.
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.