I wonder if this might be even more useful for ReactOS, which is still actively supporting 32-bit x86, while Windows 11 no longer does.

You spooked me that Win11 had dropped support for 32-bit applications, but it seems they still work fine. There's no 32-bit version of the OS though.

Rather confusingly the death of the 32-bit version of Windows in practice just means they are dropping support for 16-bit DOS applications.

There is a WoW (windows on windows) subsystem which permitted you to either run 16-bit binaries on your 32-bit system, or 32-bit binaries on your 64-bit system; but there's no 16-on-64 or 16-on-32-on-64.

If you have a 64-bit version of Windows the compatibility layer[1] lives at `%SYSTEMROOT%\SysWoW64`.

[1]: https://en.wikipedia.org/wiki/Windows_on_Windows