I wouldn't think so. It's not like Rust in FF replaces slow Python or Java code, it replaces heavily-optimized C++. If anything, Rust would likely impede speedu

I wouldn't think so. It's not like Rust in FF replaces slow Python or Java code, it replaces heavily-optimized C++. If anything, Rust would likely impede speedup efforts (even if it might improve overall code quality and safety). Also, I believe the project to rewrite the entirety of Gecko in Rust has long been abandoned.