I think they've lost all of their zeal. Years ago, even if people were bothered by the door knocking, it was still said that people admired their zeal and conviction. Not one JW that I know truly gets excited by the "Truth". They all seem to be on automatic pilot, just on cruise control. No one is fired up about anything.
More Witnesses are depressed and/or physically sick. They need to work extra hours to make ends meet. People are tired, joyless.
They realize but refuse to admit that they've been lied to. The result of their being duped is for them to not "kill themselves" over anything. They have no sense of urgency.They are apathetic.