Makes me wonder how Picasso would react to this if he were still kicking. Anger? Laughter? A high-five?
In all seriousness this is still defacement of museum property and that’s something to shake a bull at.
L.H.O.O.Q. comes to mind but Duchamp didn’t go out to the Louvre and stencil on a Mona Mustache. Now wouldn’t that have caused a ruckus?