As question stated,can someone explain to me about link wheel?

By the way,take a look at this blog post(see carefully at the image):
Why that site with 50 backlinks beats your site with 1000 backlinks. - Jim Boykin’s SEO Blog

Can this be considered as link wheel?

Is LinkWheel can be considered as blackhat seo method?

Any seo expert here?

Thanks

Azim