What I think is different between video games and tabletop RPGs is that video games have the additional constraint of packing as much as possible in the least amount of text.

With the possible exception of visual novels, no player likes walls of text, efficiency is key. In tabletop RPGs, detailed descriptions are often desireable, and not only that but GMs have to respond to players. For example, a PC may decide to rob the NPC, because why not. And now you have a whole lot of stuff to deal with: how rich the NPC is, how willing to fight, what are his relationships with other NPCs,... Video games simply won't let you do things that are not programmed.

In the article, dialog is limited to 3-4 lines. One of these tells you what your next quest is "I hear there’s a mirror in the Fire Mountains that can block its flames.". And another one mentions a red dragon. It means you only have two lines to establish a character, and if you can do it in one that's better.