…of ticket buyers don’t regard “insane” (as in unstable, directionless, subject to whim, blown by the wind) as a cinematic virtue.
Most viewers want filmmakers to show a sense of control, discipline, assurance and command.
One of the most unappetizing “crazy” films ever made was and is Philip Kaufman’s Quills (‘00). I hated Geoffrey Rush’s Marquis de Sade, especially when he began using fecal matter with which to paint on prison walls.