The vast majority of vulkan usecases aren't android or embedded. I indeed wouldn't recommend it there.
Without Android and embedded, its market is mostly SteamaDeck and some universities for the most part.
Nintendo, PlayStation, Apple and Microsoft have their own APIs.
Visualisation industry is still largely on OpenGL, when not using middleware that uses each platform proprietary API, or moving into compute like CUDA as OTOY has done.
Khronos had to come up with ANARI, to convince them to even think about Vulkan in first place.
Moving the goalposts much? Linux and Microsoft is still a huge market. Ii don't know about the switch 2 but the switch 1 had vulkan support. Apple as well if you count moltenvk
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