What if LLMs, at the end of the day are machines, so for now generally dumber than humans and the best they can provide are at most statistically median implementantions (and if 80% of code out there is crap, the median will be low)?

Now that's a scary thought that basically goes against "1 trillion dollars can't be wrong".

Now, LLMs are probably great range extenders, but they're not wonder weapons.