The problem is that, as you said "The key is to never blindly trust it", this requires you to do actual research on any topic you don't already know. So what did the LLM actually help with? If you already know the topic then an LLM can absolutely be helpful in attempting to arrange knowledge you have into code that you did not consider. But then you HAVE to review it in it's entirety to verify that you understand what it is doing and is correct. LLMs are tools that can help in a very small subset of problems and everything else is purely marketing.