Is Standalone (.exe) WMR possible?

I remember some time back it had been announced that there would be possibility for WMR without the need for building for UWP. I do not want to have to give instructions to people who will receive my demo on how to install the app. Nor do I want them to create a Windows Store account, or Steam account etc.

Is this possible?

Not with current support in Unity. The new XR Plugin architecture will enable this but that is not officially released yet.