This is appalling. Without knowing the OP's life circumstances or much about the dynamic of human relationships for that matter, jumping to this kind of conclusions only make for a witty post, at best.
Raising kids who will want to "call their Dad" once grown up is hardly about letting them make as much noise as they wish at age 4.
I sometime envy how some people view life as a simple If-Then-This-That... Much easier to sleep at night that way.
Well, that's how I feel about automating the parenting of 4 and 5 year olds. I'm not saying he should let them make as much noise as they wish - although he probably should, some of the time, I'm a quiet-loving person myself. I am saying that he's better off telling them in person. If he's tired of doing so and automates that task away they're learning something from the experience, but not necessarily what he intends.