I think this gets right down to the core of your argument. You think there is only true way to do bonsai (realism). There’s no room in your worldview for abstraction, modernism, etc.
Here’s the thing though: the Japanese people have been doing this a lot longer than you. Their trees are highly stylized, not because they don’t know how to make bonsai that look like natural adult trees, but because they’re just not that into the natural look anymore. Their culture’s already been there, did that, got the t-shirt and moved on. They’re into abstraction and modernity and you just don’t get it. You’re like a guy who goes to an art museum and praises all the Titian, Caravaggio, Botticelli, Ingres, etc. but howls in disgust, “My five year old kid could do that!”, every time they see a Picasso, Matisse, Kandinsky, or Rothko.
You don’t have to like abstraction in bonsai. That’s your prerogative. But, that’s just your opinion and others are entitled to disagree. Railing against it isn’t going to make abstraction and modernity go away.
I like natural looking trees too, but I’m not opposed to other approaches. In fact, the more I think about it, the more I like the idea of a revolution in bonsai aesthetics. Bring on the avant-garde! I’m very curious about what, for example, a Cubist bonsai masterpiece would look like. I think it could be amazing if someone used grafting to create a Japanese maple with fall colors reminiscent of Fauvism. There are so many unexplored possibilities.