I think it can because I think that "Style A + Style B + some unique qualities" is plenty to qualify as a new style. Like "Miyazaki made a new style from Toei Doga + Walt Disney + some unique qualities".

But, as expected, detractors require the goalposts to be defined as impossible to achieve. Generative AI has only been around for 4 years or so. Therefore, the current goalpost is placed at "It can't do anything new because it has not yet spawned a multi-decade movement" which is just silly.

Or, "It can't be creative because it can't yet physically go to school and instead it learns from a dataset" as if school was not a means to stream a dataset through a student :p Or, as if humans who never saw a painting before, but still swam constantly in an enormous dataset of nature and people, didn't make stick figure cave paintings.

At least this discussion is more interesting than the usual "I can tell just by being told it was made with AI that this piece has no soul". Where 'soul' is "A thing that AI is defined to not have that is unmeasurable in any way" And, therefore does not affect anything in any way and cannot be shown to exist or not because it is literally the fantasy of a ghost! :D