I'm only 16 years old but for some strange reason when I was really young we had a collection of cartoons from earlier decades, including this movie.
I have no idea why we had them, but anyway my brother and I used to watch this short, along with numerous others (I don't know their names I just remember the plots) almost every single day. For some reason it didn't scare me.
It was great, even though I vaguely remember it. Kind of twisted, probably not great for little kids. It teaches a good lesson though! You're never going to find me building weak infrastructure..