On mobile, with a touch screen, there's no obvious way to continue a post if the last element is a image. While I can tap on text to bring up a cursor, without arrow keys there's no intuitive way to move it.
On Desktops *if* the only element is an image, you can’t bring up the cursor, but if there’s any text on top, you can can navigate past the image with the down arrow.
As such there's no way to continue a post past and embedded image unless you you switch to markdown or insert it between text blocks on mobile, or if there’s already text on the desktop views