The danger is that a developer will use `svelte.each()`, thinking it uses the same rules as normal JS syntax, but it turns out Svelte applies its own rules which _are_ slightly different (hypothetically).

So the developer must remember a new rule: "JS rules when calling foo.each(), Svelte rules when calling svelte.each()". A little harder to remember. Having a unique non-JS syntax makes the distinction obvious.

(Just playing Devil's Advocate here)