No. Not at all. They might be unique in terms of the words used, and the arrangement of paragraph, since it is spun. But,
the thought itself that came from the mind and idea of the original author is not. It was just copied.
Better make your own unique content. Besides, the Internet has wide information giving sites where you can read through and make full understanding of. Then from what you have learned, you can truly make your own. article. And that is what unique means.