Wow is this entertaining
So what will happen when you use a steel cage but still misaligned front derailure and wedge the chain in the manner described? I suggest substantial damage could result that will still require replacement of costly parts. I mean something has got to give right?
I spent years riding 10 speed Record and will admit to shift up a few times as like you rightly point out, stuff happens. I never had any issue however. I am forced to suggest as others that your adjustment is off or perhaps a bent tooth on the chainring. That said I did once get a request from a fellow WW for my old derailure as he had broken the cage on his front derailure. So I guess it does happen. That makes two cases I have heard about ever. My fellow WW never told me how he broke the piece but never reported further issues. Go to the wanted section here if you need spare parts on the cheap. I may still have an old one so PM me if you need one and I'll send it to you if I have it.
I will offer a bit of unsolicited advise. No need to get defensive when folks try to help. Your first post was seeking to blame someone (Campy) without even allowing the possibility that you or your mechanic could have some culpability with the problem. That attitude based on understandable frustration set you up for the replies that followed. No big deal. IMO all the advise you received was sound from a technical point. Fact is shifting any group, even the new electric groups while going uphill under load places a good deal of strain on the system. Bent teeth and broken chains and damaged derailure can still occasionally happen. Design flaw? well yes but one shared by every derailure system except those wonderful internal gear things we see on touring bikes. No sysem is perfect, sometimes we have to adapt to its limitations