What does macOS / iOS / iPadOS development look like today? Do you not have XCode with a GUI-driven workflow anymore? I only poked around iOS development during the iPhone 1/3G days, but I thought tooling has been constantly improving since then.
I still use XIBs when doing personal Mac Cocoa development though, because the experience there is still decent (though not as good as it was). Won’t touch storyboards with a ten foot pole though, they slow down IB too much and generally aren’t a good fit for desktop UI paradigms.