"In general, images and video should be in focus and well-lit with no signs of artifacts. Vectors should be organized and filled shape paths should be closed. Some content may look great in an art gallery but isn’t ideal for stock. Before you upload content, ask yourself how it can be used commercially. If you were a customer, would you buy the image? If the answer is yes, think about what you would use it for."
Indeed, intentional blur is a very useful and often pretty artistic tool, but too much of the frame out of blur is not what Adobe Stock is looking for.
Feel free to upload a couple of samples of your rejected images here in full resolution if you wish the contributor community here to lend their opinions as to the reason for rejection. Sometimes it's not what you think...