I am not at all familiar with game development. This article reminds me of Casey Muratori mentioning a font issue in game development environment from a random podcast. On web, you can just fetch a google font whatever. No problem. On a local machine, you tend to look a well-established software like harfbuzz. But then harfbuzz could be rather a big dependency. A game is self-contained and you want your font looks cool and unique to your game, like the Diablo font. So it becomes a design issue. It's an awesome approach to let GPU render fonts. I cannot imagine how many game devs had font issues where they realized that they might have to learn how to render fonts as well not just characters and grass.