Sure, but it is slower and more maintainable. So &quot;gain maintainability at a cost to performance&quot; is correct. Which is generally what you want in most domains, but in areas where performance is more critical than maintainability you would rather use C still.<p>I don&#x27;t know how Javascript plays into that - I assume Javascript is slower than Swift, but I don&#x27;t think it is more maintainable.<p>We&#x27;re not choosing religions here. Language is a technical decision (with business impact due to hiring availability). You choose the language that fits your goals best, not which one has a better saint.