One of the (very minor) drawbacks of having a Web presence is that one becomes the target of crackpot e-mail from people like this. He describes himself as an autodidact, thereby illustrating the perils of autodidacticism.
And yet some negotiate the straits of autodidacticism quite well, Eric Hoffer for example. In general, however, he who educates himself has a fool for a pupil. That being said, I advise a modicum of skepticism concerning academic credentials.
If you expect to have 'cred' in the 'sphere, it helps to have established credibility in peer-reviewed venues. Some of my publications are listed here, at PhilPapers.
It comes as no great surprise that the crackpot in question is an anti-Semite.