Last I checked (which was many months ago) libgphoto2 did not work on the Linux subsystem for Windows 10.
If Rapid Photo Downloader were ported to Windows 10, instead of libgphoto2 it would probably use the new media import API (assuming that API has Python binding). Someone who knows what he’s talking about discusses it here: Re: Linux: Rapid Photo Downloader faster than Windows 10?: PC Talk Forum: Digital Photography Review
It would also have to use Windows APIs for reacting to media insertion, ejection, etc.
Rapid Photo Downloader depends very much on ZeroMQ. I’m not sure how reliable ZeroMQ is on Windows. Maybe it’s fine because Jupyter uses it, and Jupyter is wildly popular among science researchers. But it wouldn’t surprise me if the most reliable platform for ZeroMQ is Linux.
On the positive side, Python and Qt are very well supported on Windows, so that part of the port would be super easy.
I have not looked any further due to time constraints and the fact that I the last time I coded in Windows was the 90s