Correct. Order-of-magnitude-wise, it's roughly the same as the alternatives.
In the context of writing a new service for a new company, you should not spend one second thinking about whether your technical choices will allow you to serve 100,000 requests per second, or 150,000 requests per second. If you are, you are focusing on the wrong thing. If you get to 1,000 requests per second with a real paying client base you already achieved more than most dream of.
On the other hand, if you are optimizing a mature distributed low-latency equity trading system that is consuming ten's of thousands of market data ticks per second, a 50% improvement in performance on a 20 machine cluster might turn into some real $$$ savings. But that's not what this article is about.