Hi hi, I’m Scott, the lead for CircuitPython. Me and others are paid by Adafruit to work full-time on CircuitPython.
We love to see non-Adafruit boards supported in CircuitPython. (There are already many.) We will always review pull requests for any addition to CircuitPython including non-Adafruit boards. Those of us paid by Adafruit will only provide limited support for non-Adafruit boards though. It is expected that the board manufacturer is the main contact for support.
In this case it means we won’t add the Wio Terminal ourselves but would happily merge a PR for it.
Adafruit provides USB PIDs to hobby boards for use in CircuitPython but expects companies who sell boards to have a USB VID of their own that they can use in CircuitPython.
ArduPy looks neat and I am curious to see what parts people want to integrate back into CircuitPython. As I said before, we’re always happy to review PRs.