Did you even realize basically all commercial images you've seen for the last 30 years were already heavily modified?
Most people aren't aware of the prevalence of stock imagery during the 2000s. AI is just synthetic stock images, which I have zero problem with.
Artists with taste are the ones creating the best AI images, just they were the ones who photoshopped the best things out of stock images when that was the main mode, and just as they created the best stuff when everything was manual typesetting and dark room photography.
In reality it is seeping into our lives at an alarming rate which I worry is disrupting our shared sense of reality (which was already tenuous.)
AI has capabilities that were impossible (or very difficult before.) You could easily generate a realistic video of me saying terrible things or kicking a puppy or doing a pornographic act. You could clone my voice and call my grandma asking for money. It’s very hard to tell what is real now and it will get harder as the capabilities improve.
These tools are also much more accessible than photo editing software. Before, few people had the skill to create realistic fakes. Now anyone can do it. This has led to a flood of fake images, videos, and text online. This crowds out real humans and makes it hard to know what is real. My older relatives especially have Facebook feeds filled with fake content they think is real.
The capabilities combined with the scale make it hard to know what is real in a way Photoshop never did.