Font Inheritance not working as expected

Setting a widget's font via the QWidget.setFont() method in Python does not propagate the font to child widgets as it is described in the documentation here.

In my case, I do not want to set the entire QApplication's font because my PySide application will be run inside of Maya, and changing the QApplication font will affect ALL fonts in Maya.

I'm attaching a very simple Python project setup for reference that includes a `requirements.txt` file I used for creating a virtual environment, and a `main.py` file I used for creating a PySide2 standalone UI.