Wish the post talked real numbers, as "very high throughput and very low latency" means very different things to different people. For example, a 1 millisecond latency is "very low latency" for web related things, but might be a lifetime when comparing it to a top of the line trading application.
Would love to see a non JVM kafka alternative. But, I wish people would stop building infrastructure with C/C++ when there are safer alternatives like rust and go.