There’s not a musician that havent heard other songs before. Not a painter that haven’t seen other painting. No comedian that haven’t heard jokes. No writer that haven’t read books.
AI haters are not applying the same standards to humans that they do to generative AI. Obviously this is not to say that AI can’t plagiarize. If it’s spitting out sentences that are direct quotes from an article someone wrote before and doesn’t disclose the source then yeah that is an issue. There’s however a limit after which the output differs enough from the input that you can’t claim it’s stealing even if perfectly mimics the style of someone else.
Just because DallE creates pictures that have getty images watermark on them it doesn’t mean the picture itself is a direct copy from their database. If anything it’s the use of the logo that’s the issue. Not the picture.