> Isn't every "new style" just a novel combination of pre-existing concepts?
At the extreme limit, maybe. But within art or even digital art, then new styles are actually not that rare, humans are pretty good at generating them. Maybe they grab inspiration from nature, visual phenomena, etc, so in that sense it's not "new" but it is "new to the medium". In art you new styles all the time. DALL-E will never do that by it's very nature, and so it's easy to see how it's boring.
And that's just the stylistic level, but it's happening at almost all levels. It's almost definitional that it doesn't innovate, only remix.
It's strange framing this as pessimistic, it's not really optimistic nor pessimistic, it just is. It's also not AI, and that's important to realize: it's a statistical model that generates purely based on pre-existing training. It's very nature is without-meaning and without-originality. That doesn't detract from it being cool or interesting or helpful or enjoyable. I find it cool and useful.
But it's not innovative or creative or meaningful by itself.