I consider this another vote against putting the check box on the front page of the installer, rather than a positive vote for any particular change.

There's no way to miss the screen with the real checkbox when you are modifying the install, and modifying PATH from any installer is not recommended in any case.

The py.exe launcher is recommended on Windows, or modifying your PATH for a console session rather than globally (granted, we don't offer much to help in the latter case other than the activate script for virtual environments, but I'm open to ideas).

Adding check boxes in random places in the installer or changing buttons from their conventional text is not going to happen (on my watch).