Because on a 64 bit windows install and on 64 bit wine prefixes, system32 contains 64 bit dlls and syswow64 contains 32 bit dlls. Syswow64 stands for 'system windows on windows 64'.
As mbriar said that is just a quirk of how Windows does things on 64bit versions
Thank you!
WINEPREFIXx1 2023-01WINEPREFIX=/path/to/wineprefixx1 2023-01
In README, installation instructions says:
Why should i install x64 DLLs in System32 instead of Syswow64?
And, why should i install x32 DLLs in Syswow64 instead of System32?