Well, people were going to that site to get the content, and now they are not (all) going there. Clearly the site has lost something, especially something that ties directly into their revenue. If one considers the content as a proxy for the lost revenue -- which is reasonable, since it's the content that attracts traffic -- one could say it's been stolen.

Of course, since it's not your work that is being mis-appropriated, you're free to look at it another way :-)