I don't know why anyone would want to do it, but its pretty interesting that you can run Windows 11 on an old computer fine when in a virtual mode!...

I can't install Windows 11 on my old PC, but I can run it fine in a VM instead

https://www.xda-developers.com/windows-11-easy-install-virtual-machine-than-real-hardware/

".... Running Windows 11 in a virtual machine is a piece of cake compared to running it on an older computer. ... .. Windows 11 can work on old hardware unless you're trying to run it on a one-core chip from the early 2000s with 512 MB of RAM. But the main problem is that these security components obstruct a lot of capable systems from installing it. .... .. Virtual machines are a different story from installing Windows 11 on a physical device. When you try to install Windows 11 on unsupported hardware, the installer doesn’t play nice at all. .... .. So, I can use Windows 11 inside a virtual machine, even on a Linux system that has adequate hardware resources to spare, but still cannot install the OS due to TPM limitations. As long as you have a good amount of memory and CPU cores to spare, running Windows 11 for learning, development, or just using a few platform-specific apps won't be a problem. ... .. Microsoft also loves patching loopholes that let you bypass system requirements. They work now, but there’s no guarantee that they’ll work after the next update ... .. Virtual machines can run Windows 11 with minimal sacrifices if you want to try it, or use it for testing or occasional use. Otherwise, Linux can breathe life into your old computer for a few more years.