No it doesn't. At best it precludes a certain class of bugs (which may be very significant, but it's not a silver bullet)

var stack = [];

function ThisWillNeverCrash() {

   console.log('hello');

   stack.push('it');

   setTimeout(ThisWillNeverCrash, 0);

}

setTimeout(ThisWillNeverCrash, 0);

// my point in posting this was to demonstrate a bug ... that array will eventually run out of memory and this loops infinitely but not using a standard language loop construct... but I see someone didn’t think that was relevant

What constitutes a safe language? Is Rust safe?

Not by the parent's definition, anyway. Rust code certainly has bugs; I know, I've written some!

Now, if they're talking about memory safety bugs...