Wait, so I've been lied to? https://www.destroyallsoftware.com/talks/the-birth-and-death...
Also "good" depends on the audience. Ability to cheaply hire a bunch of devs to whip up CRUD app is "good" quality of PHP/JS even if it might not make the language "good" from engineering perspective.
I was referring to the part explaining the 2028-2040 METAL system where "we" gained 4% execution speed because we stuffed all things into a asm.js VM in kernel that can skip syscall overhead. But it's a joke video anyway.