Because it would not even pass initial code review for most developers. Most people use short review prompt, with yes/no answers.

Imagine the code compilers (or some analysis tool) gives several concurrency and memory warnings. It has easy workaround (just annotate strange code, with links to explanations that this is workaround for low level bugs).

I am too tired of shitty "safe" Rust code, with 'unsafe' section around every library call (not case here, just an example)! Be clear with that, it takes 15 minutes and 10 cents!

This project could have correct concurrent code and design, but around much narrower definitions. But most people will not go too deep with review to find it!