Rust may be Mozilla's greatest _industry_ contibution, but for society I think it's not even close.
Anyhow ¯\_(°ペ)_/¯ Rust is a great example of good engineering. There is a lot of old ideas put together in a way that makes the whole greater than the sum of its parts.
The title litterally means "Rust, not Firefox, is Mozilla's greatest industry contribution", like noone is talking about society contribution.
I don't understand what are you talking about.
Anyhow ¯\_(°ペ)_/¯ Rust is a great example of good engineering. There is a lot of old ideas put together in a way that makes the whole greater than the sum of its parts.