>Are they responsible for that Microsoft Office ribbon UI?
Well, that's the beauty of open source. Go read it.
https://github.com/xiangechen/chili3d/blob/43161b9f51021f2ef...
>When I look at this, it's so sophisticated it just makes me feel think about the widening divide as far as AI skill gap goes. Was AI used?
I feel like this was the "So tell me about your father.." turn here , did you really care about the details or did you want to wax poetic about AI?
If you want to know who made it, maybe try asking Microsoft, not expecting a random open-source project to hold the answers.
On the Widening AI Skill Gap No, sophisticated software doesn't automatically mean AI was used. Your immediate jump to an "AI skill gap" just because something looks well-made says more about your assumptions than about the software itself. Perhaps the real "skill gap" is in telling the difference between good engineering and AI magic.