> Nothing obsolete about DOS when it comes to playing 2D games.

Until you want better graphics, network, touch support, etc, etc.

Some people may not want that; and there are workarounds, even in dosbox itself; still, they are just that.

The page lists similar plans in FAQ: “To add additional functionalities (features) to the game (like online gaming, scalable HQ Grahics, HQ Audio, plugins, etc.).”