I'm saying the primary gateway most iOS users are using for loading a QR code - the camera app - will not present a transition to load your URL in this situation
Whether the resulting HTML game is playable in Safari is a different discussion.
The QR code, as generated, is effectively "not clickable" for most iOS users, unless they are using something other than the most common way to read QR codes on their phone like a 3rd party QR code reading app or similar.
In 2016, that laptop also came with System Integrity Protection - you couldn't change /usr/bin/python if you wanted to. And you still can't to this very day. Changing System-provided python was always against recommendations in prior OS versions because the next OS update could re-replace it at any time.
I agree that it probably contributed to python 2 inertia as it was re-exposing people to the idea that "typing python in the Terminal gets me python 2" and "I just used what I already had" - but it definitely wasn't stopping people installing a newer version.
https://support.apple.com/guide/security/contents-a-localpol...
The manpage for the command provides information on credential usage on Apple Silicon devices.