I'm not quite sure about white/grey/black hat, but I felt it would be acceptable to link to my own startup with a keyword of my choosing.
It honestly never even crossed my mind that it might be considered anything less than above board. I'd be interested in feedback from other people if that is considered a taboo move.
Seriously...
The guy took the time to write a solid post about his experience. An experience that will help him out.
For free.
Least he can do to reward himself (and us accept) is the use of the most advantageous anchor texts for links in his post.
I found it more odd that the logo on the right just links to the image rather than the site. But that might be for a reason I'm not privy to.
Fixed.
That he prefers it to rank for the type of thing that it does vs. its name is absolutely the choice of the author. I don't see anything 'grey hat' about having an understanding of SEO.
That you admit that "it's good SEO" then question it is puzzling to me. Is there a reason I the author should prefer to use bad SEO on his personal blog?
You're obviously not very good at SEO or else you'd know this is completely untrue.