For general public I can see how that is helpful if they can't decide if a foreign executable is trust worthy or if they execute everything with admin/root privilege.

As for me, I really hate this "feature". I work with IHVs and often have to share private binaries and it's a chore using xcopy/sfpcopy to their bespoke network path, from where I guess then someone manually copies over to their local subnet.

We should have a more robust mechanism in place than to outright ban sharing of executable files. Windows Smartscreen and Mac's Gatekeeper method of online checksum/signature verification is sort of interesting.