[Jowsey]

I know Unity at least defaults to DX11 and I believe it doesn't package other renderers at all unless you explicitly enable them in Project Settings or use a rendering feature that requires them, and I can't imagine many people are digging into the renderer settings without good reason

[dwrodri]

Perhaps I am projecting my experience from the before times, when GPUs only supported certain versions of DirectX, or certain features were causing crashes on different systems.

It never super common but I remember doing it recently for Path of Exile while trying to get the most out of my Macbook's performance.