“I don't use the newest libraries or frameworks because AI is always going to be a lot better at the libraries that are the most used on the web. Something else I do is I use a lot of UI component libraries like Chakra UI or Ant Design — this allows you to prototype a lot faster.”

Pick popular old libraries so AI codes them better — boring stacks ship faster

AI coding speed is a function of training-data density: the older and more popular the stack, the more accurate the codegen. Diego paired that with prebuilt component libraries (Chakra, Ant Design) to skip UI work entirely, shipping the MVP in two weeks instead of two months.