Here's the CEO of Builder.io supporting your comment: he says they tried LLMs/agents, and it didn't work. Then, they collected a dataset and developed an in-house model only to assist where they couldn't solve with imperative programming
Not really, he's saying that the solution is to not have the entire process in a single model, it's better to have the model work on specific pieces that you broke down, rather than feeding the whole thing and expecting the model to be able to break it down and generate correctly by itself.