... "The new bytecode format uses approximately 50% less memory, which means a reduction of 10% in overall memory usage for JavaScript-heavy websites, such as

... "The new bytecode format uses approximately 50% less memory, which means a reduction of 10% in overall memory usage for JavaScript-heavy websites, such as Facebook or Reddit." This is squarely to help webapps be faster and more memory efficient. This change is great, and doesn't align with the cargo cult of, "Make web pages great again."