To be clear, I think that sword rushes should definitely exist in the game. If moving iron makes the strategy unplayable, or too disadvantaged, that would be a problem for me. But what I'm talking about is that sword rush in any one game in particular should not be a given. When you dedicate to the bottom lane, and you reveal convenient iron, and you have a neighbor you want to snipe, then I think it's appropriate for a sword rush to be on the table. If you don't find iron, but you wanted to snipe someone, then I think the correct response is something like trying to transition into siege engines for a later push, or aim for a longsword timing instead.