Flag it and move on. Without any detail at all, it's a worthless post. Most small businesses fail in the first few years - saying "I'm successful!" with zero detail does not help anyone.
Reading the article reminded me of those companies that have testimonials on their site attributed to "Anonymous". Testimonials basically saying "This product is so good, I'm not willing to put my name to it!"...
It's only worthless if it's not true to possible positive outcomes for the reader. Whether or not it is an actual past experience of the 'author' or not, it can still serve its purpose (that's what myths are). In fact, you could argue that its anonymity increases its efficacy.
Reading the article reminded me of those companies that have testimonials on their site attributed to "Anonymous". Testimonials basically saying "This product is so good, I'm not willing to put my name to it!"...