What's the basis for this? Unfortunately it's hard to describe, but I've listened to a wide variety of popular and niche genres my whole life with a specific eye toward appreciating all the different ways people appreciate music and I know when something feels new.
Even most (or all?) pop music feels new. If it wasn't, I don't think it would be popular. Sure, it's all derivative, but what makes music enjoyable is when it combines influences in a fresh way.
"French house polka" achieved by doing a statistical blend of the two genres just isn't that interesting—it misses so many ways that things are combined by artists—specific details of the texture of the sound, how it's recorded, cultural references, tons of tiny little influences from specific artists and other genres, etc.
I've tried very specific prompts in Suno and it's not even close to useful for someone who knows what they're doing. The image generators are hardly better—things overwhelmingly trend toward a fixed set of specific styles that are well-represented in the training sets.
This critique falls down in certain areas though. Using tools like Suno to come up with songwriting ideas can be fantastic—as long as you have the taste to curate the outputs and feed it into your own creative process. It's also fantastic for creating vocal samples, and I'm sure it'll crush it for functional music (advertisements, certain types of social media) in short order