The fact that we did this as a 1-man team for the GUI and that I can still compile it today (if I had the code) against wxWidgets, to then run on macOS and Windows simply shows the lazy nature of (most/all?) desktop apps by big companies these days.
I utterly detest using them, but it seems customers think an app that takes 5 seconds to launch with a spinning whirly wheel and horizontal gradient animation over list views for 5+ seconds before content is loaded is perfectly acceptable. Quality with a capital K!