Yeah, I guess that for small projects, you can prototype and generate well and good. 20k loc is not much. A seasoned engineer can put code generation to good use. Yet, the cost of maintaining 4x the code grows exponentially, especially when you have to communicate your specs to humans, or have stakeholders discuss how they want the product to be. Firmware is also a nice ground. Sensors also behave mechanically, which is good for AIs who can pattern match more effectively than with actual humans. I won't say AI is useless. I see the incremental gains. I don't see the exponential gains for everyone that is going to kill the world - yet. And the fact that it takes 50+ comments to actually get someone who can explain real gains tells me much about how overhyped the whole domain is.