researchers concluded that “outlawing all deepfakes is unrealistic and unfeasible”—especially since all the harmful AI-generated images that are already out there are likely to “remain online indefinitely.”

Just think a little bigger:

It must be a crime to have the harmful material.

Have it on your PC or phone —> goto jail.
Have it in your online account —> goto jail.
Be a service provider and have it on your server —> goto jail.

This will reduce the stuff.