Rust is 6.5% of Firefox's code:

https://4e6.github.io/firefox-lang-stats/

They are working on a new Rust-based rendering engine, Servo, but it hasn't received nearly the level of work that a browser like Chrome has yet.

What do you mean by it’s poor state in macOs? I use it as my main browser on macOs both at work and at home, and much prefer it over Chrome.

I envy you. There are complains of Firefox on macs on most Firefox-related threads. Ignore the titles and search comments in recent threads with significant number of comments: https://www.google.com/search?q=site:news.ycombinator.com+fi...

On my machine at current gig it crashes every other day making me lose my containers. It doesn't overheat the machine like some others reported though.

According to the same benchmarks that test is a few versions older. Compare it to these and they are neck and neck (in theory). Consider that most benchmarking is subjective...depends on so many factors like is this Clear or Ubuntu Linux? Are the chipsets the same? The numbers are different here for "Speedometer" but between both tests there isn't enough information here even to say the tests are comparable just different. https://www.phoronix.com/scan.php?page=article&item=firefox-...

It's not. You may as well be comparing C++ to Swift. Chrome has had a lot more time and resources put into it anyway while Quantum has only seen release for two years.

That said, you're better off comparing CVE counts for Firefox vs Chrome. That said someone could craft a malformed legacy font file that has to be parsed by some dusty win32 code and BOOM!