John Mueller from Google does not offer direct advice containing hard messages. But in one of the threads of Google Webmaster Help page, John gave the hard truth to a webmaster who was providing low quality content. In fact, John said that the webmaster needs to take the website down and start absolutely fresh.
He mentioned it to the webmaster that the content he had put up on his site is questionable and it seems like the content is either rewritten or spun from other sites. John said that such kinds of content is against the webmaster guidelines and comes under spam. That is when he advised the webmaster to take down the website and begin all over again.