Well, not supporting JAWS is like claiming you are big in the transportation bussiness, and when someone comes up to you with a car, you end up
explaining "Oh, but we only do horse carriages." Not supporting JAWS is just not an option. The fact that JAWS is proprietary is irrelevant here. It is simply the most wide-spread screen reader, period.
IOW, not supporting JAWS is just not an option.
Besides, Qt doesn't work with Narrator either. It is telling if your accessibility support doesn't work together with the screen reader provided natively on a specific platform. So it is really not about JAWS. Qt's Accessibility support on Windows is just not up-to-date and bitrotten to a point where it is no longer useful to endusers.
IOW, not supporting JAWS is just not an option. Besides, Qt doesn't work with Narrator either. It is telling if your accessibility support doesn't work together with the screen reader provided natively on a specific platform. So it is really not about JAWS. Qt's Accessibility support on Windows is just not up-to-date and bitrotten to a point where it is no longer useful to endusers.