Part of being an modern artist is having the chutzpah to create something and stand behind it with a straight face.
What I find marvelous about modern art from the likes of Dali and Magritte and Picasso was their ability to create imaginative works long decades before Adobe Photoshop and Adobe Illustrator put that sort of power to create in the hands of people.
Yes, people could try to imitate what they did with their own brushes and canvas in those days, but few came close when anyone bothered to try. (Studios like Disney and Warner Brothers and the occasional technically brilliant photographer.) Now, you see this sort of stuff in movies and commercials and movies routinely.