He has, again something interesting: You know it from Magento 1 and Magento 2. If you want to create a configurable product and only then the simple products directly from the KP, this is pleasant and easy. From Magento 2.3 there is here but something to consider: If you forget to store the product weight in the preparation, Is that possible (cunning) Magento assume, that a weightless product actually only a virtual product can be and therefore are all from the KP-scale individual products automatically virtually.
If you know it, it is understandable – unless, annoying 😉
Used in Magento Version 2.3 Comments? Additions? Notes? Gladly!