Why AI art is so controversial

I mean, an AI technically still does steal a persons art. As you said, it takes data from certain pre done historic arts and uses that to then “process” a new image to replicate that style. Remember this is just technology, it wouldn’t just create anything new out of thin air. It’s like picking bits of an art work and shoving it onto a white screen and claiming that the art was original and never seen before, which is absurd.