"Ultra processing" is corollary to unhealthy food, not causal. It's not the ultra processing that makes it unhealthy.
That's the crux of this disagreement. Assuming the relationship and then assuming the next step that the antitheses must be true. Unprocessed foods aren't inherently healthy and ultra processed foods aren't inherently unhealthy, the two things have nothing to do with each other.
Parent comment is begging you to understand that correlation is not causation. That you infer it to imply causation leaves you less well-informed about the world.
That's the crux of this disagreement. Assuming the relationship and then assuming the next step that the antitheses must be true. Unprocessed foods aren't inherently healthy and ultra processed foods aren't inherently unhealthy, the two things have nothing to do with each other.