I have been installing Classic Shell on clients computers for some years.
This is a pity, but MS is really killing itself with this egregious W10.
I now have my clients (who can afford it) purchase a Mac, install Parallels then load W7 or W8.1.
It’s a great solution to Windows 10 issues.
BTW - if you ever go this route when installing W8.1 (W8 does not support IE 11) you can install it either ‘Metro’ or Classic.
My primary home machine is Mac Mini hardware with VMware Fusion VM hosting software, running Windows 7 and Windows 10 VMs, along with Linux and Unix VMs. Very productive. (I have no use for Win8/8.1).
The reason for Fusion is I need to be able to migrate VMs between MacOS, Windows, and Linux hosting platforms, and started doing that long before VirtualBox came out for all those platforms. VMware was the only cross-platform host at that time.