Not everything in the world is black and white, that includes the SEO world. Someone pointed John Mueller of Google to, what looks like a PR reporting tool, and suggested it was used to manipulate Google's guidelines and buying links. I am not sure, I didn't spend time looking into it. But John Mueller from Google responded that it is okay to submit "uncertain" spam reports to them....
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Google Is Okay With "Uncertain Spam" Reports
seroundtable.com