You make quite a claim, and then only discuss speed and throughput.

App boxes are usually pretty easy to scale up (and cheap). The efficiency of your app layer in terms of I/O is very rare the bottleneck for a scaled application.

The best reasons to use Node.js: - Single language for FE and Backend. Easier to recruit and build things. - Much faster to build things, on average, than in Go (or especially C++)

I'm not saying it's great, or better than Go/Rust/etc. It has obvious weaknesses, but to say "There's no good reason" is to only view development from one perspective.