Of course they didn't; the damage to the airline's reputation would be terrible. The customers didn't make this choice; they were deceived by Boeing, who sold

Of course they didn't; the damage to the airline's reputation would be terrible. The customers didn't make this choice; they were deceived by Boeing, who sold them on the idea that they didn't need any significant new training for this disaster of an aircraft. The customers didn't design this thing, they just bought it after listening to Boeing's promises.