The sense I am getting is that GUI generation of markup code is as inevitable as was the first compiler back in the old days. Whether that point is now or not remains to be seen. Back then we had a combination of increase in RAM sizes/processor speed and democratization of Computers beyond advanced research laboratories, that prompted this change. It no longer was necessary to worry about that extra 10 KB or so of cruft that the compiler added.
I see similar concerns about file sizes here, whether the point of not caring for bandwidth is here remains to be seen. And could this be the second wave of web democratization? I'd love to see my mum design her website with this.