I don't get this. Many things like changing the IP or audio devices were so unintuitive that I just memorized them. They're still burned into my brain. In Win 11, you just search for 'IP', click 'Ethernet-Settings', done.

Same for the signifiers: In the Win 11 Settings, give me an example of an element that is not obviously clickable. Everything has button shapes, or step-in indicators.

To be clear, I'm neutral towards that settings app. But UI back then was nowhere near as good as claimed here, and flat design (at least the current iteration) isn't to blame for Teams being bad.