Most cases you're probably thinking about are of CEOs of big companies issuing CYA-statements that minimize legal attack surface. Here, the guy just exposed himself completely. Also Reddit is not Goldman Sachs; it's value is directly proportional to how much people like the company, and Reddit finds itself in the middle of another funding round.

I do see a great potential for bad consequences here.

I doubt the unemployed guy would have the resources to mount a legal attack anyway. As for bad PR, take a look at this thread (or the reddit thread): the majority of people are reflexively siding with the CEO.

Reddit just raised $50 million. A lawsuit is the kind of thing some lawyers take essentially on commission when the target has money.