I'd say even Vulkan alone is sufficient to cover Windows.
The main benefit of DirectX 11 is that it's a lot simpler for the developer. But when you are creating an abstraction layer for multiple APIs, you are not the target audience for a simple to use graphics API.
IIRC Doom Eternal only supports Vulkan (on PC) and that didn't really cause problems. In fact, the game's performance was superb.