Are you Steemit user guide?
Even if it dosen't have any image. Why do you think it must have an image?
See yr posting! https://steemit.com/freedom/@transisto/hong-kong-protests-discussion
It also no image! Even one text line . That's all. Nevertheless, I know what U wanna do.
It is not reasonable!
Let's try to respect others!
If there is one post has a lot images no text ? Will you say no text and downvote?
It is much easy to upload image compare with to write text!
It needs a lot of finger works....