Yes. But currently the only way to post images is by URL. You can click the “img” button above the reply window, and insert the URL (web link) to an image residing somewhere on the Internet. In the future we will add the capability to insert images from files etc. directly into a post.
For example, on Wikipedia there is a nice photo of our guiding spirit, @abe at
https://upload.wikimedia.org/wikipedia/commons/archive/c/cf/20220823202054%21A%26TLincoln.jpg
So I click on the “img” button and add that. See result below: