This has a kernel of truth in it, but only a tiny kernel. Mantle was much, much simpler than what eventually was shipped as Vulkan 1.0. When mobile vendors got

This has a kernel of truth in it, but only a tiny kernel. Mantle was much, much simpler than what eventually was shipped as Vulkan 1.0. When mobile vendors got onto the bandwagon, it turned into the monstrosity it is today.