You don't have the luxury of having someone who is deeply familiar with the code sanity check your perceived understanding of the code, i.e. you don't see where the LLM is horribly off-track because you don't have sufficient understanding of that code to see the error. In enterprise contexts this is very common tho so its quite likely that a lot of the haters here have seen PRs submitted by vibecoders to their own work which have been inadequate enough that they started to blame the tool. For example I have seen someone reinvent the wheel of the session handling by a client library because they were unaware that the existing session came batteries included and the LLM didn't hesitate to write the code again for them. The code worked, everything checked out but because the developer didn't know what they didn't know about they submitted a janky mess.

What are those things that they are good for? And consistently so?