By the time the Rust developer is finished with their refactoring, the C++/C#/Java/JavaScript developer has implemented many different gameplay features, played

By the time the Rust developer is finished with their refactoring, the C++/C#/Java/JavaScript developer has implemented many different gameplay features, played the game a bunch and tried them all out, and has a better understanding of which direction should their game be taking. Man, slower than C++, that's pretty damning.