It’s not exactly that. IIRC he was shown a new graphic design tool the company wanted Ghibli to use. The tool let the user used a stick man and copy-paste anything on it than make it walk and do thing, here’s the kicker the lead salesman was really into the program possibilities and show to Miyazaki that you can instruct the program to consider the feet of the stick man to be its head and etc.

The result were ghastly dull and, not impressed, Miyazaki ask the salesman who design that and how much time it take. A few keystrokes said the Salesman at which point he insult the salesman saying that he doesn’t understand what make a movie or something horrific, that ultimately what he was selling was an insult to life… and the salesman cried