No, the problem is that Poser 12 uses a new version of Python. It wasn't just DSON. All the Python scripts have issues with the new Poser (though some are easier to fix than others).

Bondware is trying to update some scripts, and some people who wrote their own are fixing them. But DSON is DAZ's. If it's going to be fixed, they have to do it, and they are no longer updating DSON.

It's not a secret.

https://www.posersoftware.com/article/469/how-poser-python-and-dson-work-together