Exactly. I’m not sure what to call the new feature, “array spillage”? I didn’t know the original was called “array formulas”. Anyway, the change to make the output go into cells automatically is indeed what I meant.
In a programming language it would be called destructuring.
Your link calls them "multi-cell array formulas" (expand the first accordion).
Yeah, 'spilled array' and 'spilling' are the correct noun and verb.