Dada absolutely condones stealing, and the destruction of art entirely. Read 391 sometime. Read Berlin. Read Picabia's manifestos.
Understand that artists are creatures of their dialectic. Learn the philosophy of appropriation art, and then look who's upset about it. AI pisses off the same smug weirdos now that were pissed off by Dada then, and it is no less reviled. All reviled art forms are Dada, deal.
Dada is the property and the moral heritage of the malcontents of the art world, not its fucking progenitors! Your clean lily washed memory of Dada is a travesty, and Dada finds you guilty.
The only thing that pisses me off more than clueless art snobs, is clueless art snobs with a wikipedia level understanding of Dada.