You can wait for slow programs that use a ton of excess memory, sure.

Or, you can have fast programs that use memory efficiently.

You just can’t do it in JavaScript. You can get really performant with JavaScript with careful engineering for sure… but there’s a big wall of diminishing returns even with all of the JIT compilation and tracing garbage collection.

Nothing stopping those same JS developers from learning some Zig or Rust or whatever. It might actually be easier to learn than memorizing all of JavaScript’s implicit coercion rules.

But if that’s too much to ask then stay in JS land and make sure there are JS devs to write tools for!