Oh absolutely! I'm not saying photography isn't challenging. I'm saying one picture shouldn't be the only content in a post. If you have numerous photos and you provide a description, even if it's just a few words, that would be perfectly acceptable!
I guess I'm not a huge fan of photo contests where participants comment their photos and that's it. It would be nice to see words/thoughts to go along with a photo because that will show more effort from someone instead of simply just posting a picture. I may be biased so more of your thoughts are welcomed!