I have consulted with the person who processes my official papers with AESA, the agency that manages the airspace in my country. Here we have the possibility to make a paper that allows us to "certify" DIY aircraft with similar characteristics to commercial aircrafts. There is a classification on similar weights, speeds, controllers, etc. Last month they issued new regulations and the concern was whether that would change it. In principle it remains the same so you can continue to use DIY drones. It has changed that they now want to make a manufacturer's registration and ask for more paperwork to check the aircraft they manufacture.
As the regulations are being copied from one country to another, I hope that in the US it will be the same or something similar and that no one will have trouble flying with the drones they themselves make.