“See! It’s just a game console”
Instead, I'd see it as extended platform attached to your flipper, presumably access to much wider software ecosystem (basically anything that can run on a raspberry), new sensors and new connectivity options, all in the name of extending the original functionality.
For example, with the new module you can use it as a cheap oscilloscope on-the-go, as mentioned in the blog post. Not sure when I've ever needed that, but I'm sure it's useful to someone.
The Flipper Zero is essentially a swiss-knife of portable penetration testing, I'm sure the new connectivity options adds some more features to that concept.
Additionally I'm sure people will discover loads of use cases for this add-on that has nothing to do with gaming.
Edit: I guess you could use the D-pad and the gyroscope for two sets of axes, but that feels dangerously prone to accidents at best.