That's true. Still, a painter with skill and a good eye is still capable of saying a lot more than someone who has a vague itch in the ennui.
Okay, here's a good way to define dadaism. Think of any of Yoko Ono's work. That's Dadaism.
Some of the work being put up here on this thread is actually very, very good surrealism or abstract with outstanding design and color theory.
Dadaism, on the other hand, is absolute trash.