So Close
This is another one of those instances where both parties involved are guilty. One party is self-absorbed while the other is spiteful. The group of people being loud disregarded everyone else’s right to peace in a coffee shop. They were probably excited about something, but that excitement shouldn’t be to a degree that it bothers the people around them.
That said, the guy that went out of his way to purchase the domain name the group was interested in out of sheer spite, doesn’t make him some kind of hero. To this guy – sometimes going for the high road is the best choice!