Well, we know this is not true. At least Armando Scannone had a team of 4 cooks to make and rehearse each and every one of the recipes in his famous cookbook [1]. Armando Scannone has a famous Venezuelan cookbook, it is the obligatory reference for those who want to make Venezuelan dishes. I have personally tried many of the dishes and the recipes are correct and the result is just as the book indicates.
[1] https://www.amazon.com/-/es/Armando-Scannone/dp/B011YUALZS