I know what's like running a business, and building complex systems. That's not the point.

I used highload as an example because it seems like an objective rebuttal to the claim that "but it can't tackle those complex problems by itself."

And regarding this:

"Claude is very useful but it's not yet anywhere near as good as a human software developer. Like an excitable puppy it needs to be kept on a short leash"

Again, a combination of LLM/agents with some guidance (from someone with no prior experience in this type of high performing architecture) was able to beat all human software developers that have taken these challenges.