The launcher is a minor nuisance, but it does give you the possibility to swap between Vulkan and DirectX
That's... Not a perk of the launcher at all?
Plenty of games give you that option without needing one.
In fact the already suggested method of running directly the preferred executable (DX11 or VK) was a way to sidestep the problem.
And there are other workarounds as well.
Hell, the recurring crash at launch was apparently caused BY the launcher itself.