There is no "service to the SV community" that this guy is doing by airing dirty laundry. If you've been wronged by your former company, handle it on your own. Shaming the company is not going to help you, the company, or anyone else. What you're effectively suggesting is that your "service" is to warn everyone to stay away from Miso.
Unfortunately, as a hiring manager, I'm going to stay away from you. While I wholeheartedly agree that you should have gotten your $10K referral bonus, I also believe it should have been while you were still an employee there. Once you leave, you're not entitled to anything more from the company.