But the same can happen in trad games.
Godzilla pops out of a closet! Therefore, trad gaming is not verisimilitudinous! Therefore, it cannot work for you.
It's true, that game would not work for me.
What I'd say is that trad gaming can work for me, under the condition that the GM is faithfully presenting a fixed world which they attempt to imbue with internal logic. If that logic isn't perfect by my standards, that's ok. If it's way off, no thanks.
Whereas narrative gaming
cannot work for me because the GM definitionally does not present a fixed world. This is in fact the point of narrative gaming--you get fun scenarios like Pemerton's rune examples, the players feel more agency in constructing the plot, and so on. That's cool.
But it is different, and this difference prevents it from doing what I'm looking for.
I don't think so. What's happening is that you are all criticizing the method by attacking the flawed example. If you are not attacking the valid example... the one you call "fixed"... then you're acknowledging that the method works perfectly fine.
I don't think the method works perfectly fine...even your valid example permits a much narrower range of DM responses than takes place in these games. Look at Pemerton's runes--an actual play example, valid gameplay, fun for many people. But for me it breaks the illusion and so I won't enjoy it.
Right, this is why people have pointed out it is a different skill set.
If folks were saying "I don't like fail forward because it forces me as a GM to be creative in a more immediate manner" then I would say that you have a point. But I don't think people want to frame it that way because it's an admission of some kind of shortcoming as a GM... so it's far easier to criticize the method about how it can result in absurd outcomes.
I think this is a really tempting thought for people on your side, and I've heard it a few times..."I guess these folks just aren't experienced/creative/skilled enough to pull it off".
You can't test that without sitting at my table, I suppose. But I've run BitD campaigns that people loved, I've run Havoc Brigade and Lady Blackbird, I've implemented narrative mechanics in my 5e games. I've run whole sessions based on improv, and they've come off quite well, at least to my players. So in my view there is something more here.