John... and John,
If the image is the message, then yes it should speak, on its own without added explanation. Alternately, of course photos can be wonderful backdrops for the words someone conveys or, as already mentioned, sometimes some added words to the image really work well. John, I think your shots you shared are great examples of images that speak for themselves.
What I mean is that if imagery is not embedded as part of other communication, it MUST say something on its own. Accomplishing that communication is the essence of the art of photography that I am continually trying to understand and improve at.
This image below is my own example of how I began in recent years to realize how an image can speak for itself. When I went to take the shot, it was to capture the pier and the lighthouse during the fury of high winds on Lake Michigan. I didn't even know people surfed out there. Since the surfers weren't leaving, they became part of the shot, and thus 'the story' of the image.

I called this shot "Savage Charisma" to convey my thoughts about the alluring beauty and the terror of the lake, but I think the image tells that story well on its own.
Regards,
Randy