Incompatible minimum macOS version

The PySide6 wheels for macOS list "macosx_10_9" as the minimum version but they are not compatible with this version of macOS.

When importing on macOS 10.13.6 I get the following error importing a symbol that was added in 10.14

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/PySide6/QtCore.abi3.so, 2): Symbol not found: _NSAppearanceNameDarkAqua
  Referenced from: /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/PySide6/Qt/lib/QtCore.framework/Versions/A/QtCore (which was built for Mac OS X 11.0)
  Expected in: /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit 

From that error message the Qt6 library was built for macOS 11.0 which this page of your website says is the minimum supported version.

https://doc.qt.io/qt-6/macos.html

I assume someone forgot to bump the minimum macOS version for PySide6 at some point.