Because once the problematic content is removed it should no longer be blocked.
>It's accurate
It is neither a C&C server for a botnet, nor any other server related to a botnet. I would not call it accurate.
>Nobody should ever use that site
It has a good reputation for archiving sites, has stead the test of time, and doesn't censor pages like archive.org does allowing you to actually see the history of news articles instead of them being deleted like archive.org does on occasion.