Perhaps my point of view is different. I grew up in a time when it was common knowledge that there are no security guarantees for anything you put up on the internet--which is quite literally the most public forum in all of recorded history. Scraping cannot bypass things like password protected pages. So that means anything that was scraped was truly, literally open to the public in some way. That is, anyone could type in the link and look at it. Anyone can right-click and hit "save image" or even screenshot then copy/paste. I know this. You know this. We all know this. It's known whenever we put something up on the world wide web. In truth, this is like finding out there really was a boogie man all along. We were warned all our lives.
Also, with or without that scraped art, AI would still be able to produce that exact art. Because thinking AI is referring back to any data set after it has been trained means you haven't yet gone far enough in your reasoning. This isn't pattern recognition, no matter who tries to tell you it is. AI is actually 3 things in one--and one of those things is a neural net. It's literally a simulated human brain, copied from actual human brains (read how we got neural net tech, no joke). So if we understand brains as well as we think we do, then this thing literally learns and thinks and reasons just like you and I do. So before I can take the stealing argument seriously and whole-heartedly, I have to ask:
What is stealing versus inspiration? You know what I mean?