All things being equal, implementation language shouldn't matter. But they aren't equal — different languages have different trade-offs and this affects program

All things being equal, implementation language shouldn't matter. But they aren't equal — different languages have different trade-offs and this affects programs they produce. A fantastic `ls` implementation in Java would not be very practical. OTOH it's not an accident that Rusty replacements of these programs tend to be multi-threaded, because that's a thing Rust encourages and makes practical.