Question

Can blurry images make it hard to identify the subject of a photograph

Answer 1

yes and no if the whole photo is blurry then yes but if the background is just blurry then it's most likely bringing out an object in the photo 

hope this helps 
GENERAL OUT 

Answer 2

If a photo is blurry, because the scene is moving, is it OK? Is this deemed as poor photography, or can it be considered good as it shows motion? I don’t mean like if I want to focus on something in the foreground and blur out the background. I mean like if the object of focus is blurry.