Because economy. Look at marvel movies, do you think the latest one is really new? Or just a rehash of what they found working commercially? Look at all the AI generated blog posts that is flooding the internet..

LLMs might produce something new once in a long while due to blind luck, but if it can generate something that pushes the right buttons (aka not really creative) to majority of population, then that is what we will keep getting...

I don't think I have to elaborate on the "multiplying the bad" part as it is pretty well acknowledged..