No. WSL2 is a Linux VM. It doesn't expose Windows API internals or implementation details. It uses normal, already well-documented public ones. Wine and ReactOS

No. WSL2 is a Linux VM. It doesn't expose Windows API internals or implementation details. It uses normal, already well-documented public ones. Wine and ReactOS can already use the publicly available documentation and they are still behind on many such APIs' implementation. Windows is a big OS. It takes serious man power to implement many things.