Utter crap. Rewriting history after you get called out is just pathetic. They owed him money and either through mistake or malice didn't pay him. When he contacted them to correct it they tried to legalize their way out of it. If I wouldn't have anything to do with them before, I'm doubly unimpressed now.
They paid him. They admitted they were wrong and apologized. They clarified their policy so people won't dispute it in the future. I'm not sure exactly what more you'd expect them to do. I'm sure they wish they'd handled this differently, but once he posted it, they seem to have handled things reasonably well. Plus, of course, you've only seen one side of the story. Even if the company has other facts, they can't pre…
If you look at the sequence of emails he was first denied the bonus on the grounds of his own job performance, then on the grounds of not having a written contract, then finally because he didn't meet their ad hoc policy requirements.
I guess nobody actually expects them to apologize like human beings, but it would be nice if they said something like, "We're sorry for fighting you on the referral bonus. You deserved it after the 6 months was up and we should have given it to you then. We've put a structure in place at the company so this doesn't happen again. "