yeah its pretty amazing it can do this. The problem is the gaslighting by the companies making this - "see we can create compilers, we won't need programmers", programmers - "this is crap, are you insane?", classic gas lighting.
It’s giving you an idea of what Claude is capable of - creating a project at the complexity of a small compiler. I don’t know if it can replace programmers but can definitely handle tasks of smaller complexity autonomously.
I regularly has it produce 10k+ lines of code that is working and passing extensive test suites. If you give it a prompt and no agent loop and test harness, then sure, you'll need to waste your time babysitting it.