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.
Four skilled cooks will be able to complete recipes much faster than even a good home cook.
It's like watching an electrician wire a bathroom in two hours and assuming anyone can do it. They can; after years of experience and knowing what to do, what not to do, and what to avoid.
[1] https://www.amazon.com/-/es/Armando-Scannone/dp/B011YUALZS