Works well for us nonetheless, also on more complex things. It's not worse than most (including seniors) humans I worked with in the past 40 years, but it is faster and cheaper. On HN it is sometimes forgotten that by far most programmers do not like it; they need money. If you see what comes out of them, you have to puke; yet it's running billion$ businesses and works surprisingly well considering the bad code quality.
It's quite literally incapable of solving many very mid-level things, no matter how much you help it. It's not a reasoning machine, it's basically a different way to search existing answers.