The whole challenge of the 800 is holding it together over the final 200. And you can never be sure you'll hold form and speed. That's what makes each race interesting.
If eating a bunch of baking soda with a buffer to get past the stomach eliminates this factor, yes it's nice to see faster times, but that will lose all meaning pretty quick. You'll see.
Who'd a thunk a simple trick like that would make the 800 so easy, all those decades nobody knew. But there it is.