Example: in the 90s, Windows, arguably one of the easiest commercial operating systems and certainly the most familiar, used to routinely frighten its users by falsely accusing them of crimes.
"This program has performed an illegal operation and will be shut down."
If you're wondering why software UX these days is a colorful, foam-padded Barney-esque hellscape of smiling Alegria people and error messages of the form "Oopsie, we made a boo-boo :(", this is why.