Having done a PhD in AI and studied how AI platforms are fed 'big data' tracks to 'train' them. What you will inevitably get is a master that is inherently average within your genre. AI is nowhere near having any understanding of how to make your tracks stand out within that genre, or what any element in the mix is doing at any point. Perhaps shockingly, in my experience, it's better than some big name old-skool mastering engineers. Less shockingly, it's hands down better than a host of 'mastering engineers' with little experience - but it will be a long, long time till top artists and labels choose AI over an expert mastering engineer as a sensible commercial decision to make tracks really fly. AI doesn't have soul, some might argue it never will. It certainly doesn't have empathy. It can't feel how the drummer or singer is feeling. And like many of those old-skool mastering engineers it outperforms, it can't mix. See my in depth blog post on LANDR etc here and make up your own mind.