Well it says they didn't discover MAL until 2018 after they'd been working on creating compilers for quite a few years. So yes their implementation of MAL wasn'

Well it says they didn't discover MAL until 2018 after they'd been working on creating compilers for quite a few years. So yes their implementation of MAL wasn't 10 years long. And they also wrote an interpreter in Rust and then a compiler in C in the time after discovering MAL. Safe to say the MAL portion takes quite a bit less than 10 years.