> A lot of sass people i know are more and more choosing rust for boring code

It seems like you're in some kind of bubble, especially when looking at Rust usage in the industry.

> Once your sass products get enough users, and you're dealing with millions or billions of requests per day, those rare bugs start showing up quite often...

This is a blanket statement that's simply not true and I'm speaking as someone who uses Go in the exact scenario you described.

What kind of bugs are actually happening to these people? Do you have any real-world examples of the issues you're referring to, ones that suddenly start occurring only at the scale of millions or billions of requests per day to them?