So, the distinction being made is between people who work on the artistic product itself (music, programming, graphics, game design, and, yes, the text at the end) and the people who work on things like marketing, business management, customer support, developing the web page and payment solution, etc. And in this view, he is indeed part of the group of people who helped "create the actual game", unlike many of the other employees.

Now I don't think it's right to dismiss the work done by all the supporting staff who didn't work on the actual game but whose work was nevertheless vital for the game and business to succeed. But your comment isn't right either.