same for me, I think this also happened for me once where I didn’t understand the post. Anw, I just copied this post in my browser and I could see the link. For those using an app and do not see the link, here it is https://ceesstuff.github.io/blog/detour_points.htm
Good idea. The lemmy UI isn't quite done, either. When I posted this blog post it seemed to imply that you additionally can post an image. But then URI gets replaced by the image URI... So I can vaguely relate how the Mlem devs might have gotten confused.