Just for the record, I've never posted my username (A. West) for any of these papers.
As the Google evidence proves, that claim is false.
Moving on . . . .
The site advertises that it has over 50,000 papers indexed. In reviewing many, many pages of the site, I see no signs of any other writer usernames or email addresses, except under seemingly rare circumstances. This tells me that the company did, indeed, put a lot of effort into removing such information from those 50,000+ papers prior to publishing. However, as someone who has done a lot of work in bulk search-and-replace editing across hundreds of text files at once, I know that it is literally impossible to do so 100% accurately or completely (even when using regex) unless the targeted text 100% conforms to a particular structure across every file. This means that if a writer in any way alters the company's disclaimer/username template's structure/lines/formatting/wording/symbols, it's possible for papers like those from ProfessorVerb to slip through the cracks, regardless of how thorough the company may have attempted to be in its cleanup efforts.
That said, there is no evidence to either prove or disprove ProfessorVerb's assertions about what his intentions were in providing his email address and telling the company's customers to contact him outside of the company's purview. Despite the fact that ProfessorVerb repeatedly made jokes at my expense (concerning issues that have been very important to me for many years, and to which I have dedicated immense time and energy), I will not compromise my integrity by outwardly claiming-without more compelling evidence-that ProfessorVerb's motives were nefarious. In fact, it is much more likely that ProfessorVerb's intentions were innocent, especially since he claims that he wrote those particular papers many years ago, probably before the company had implemented its current systems and stricter guidelines regarding precisely what a writer can and can't include in a paper.