That's a logical consequence of one possible view in population ethics, which is orthogonal to utilitarianism. There are equally counter-intuitive consequences

That's a logical consequence of one possible view in population ethics, which is orthogonal to utilitarianism. There are equally counter-intuitive consequences of discounting future lives or not valuing them at all. What makes this specific point in time so much more important than every other point in time? Can we do anything we want to make our lives better regardless of future consequences?