Does that mean each all pop are uniformly sized? And that there is a hard limit of 25 pop in a planet? If so, that is terribly disappointing. I was really hoping for a more granular system.
Another hint that pops are integers: the screenshot has a particular pop growth at 15/50. That looks a lot to me like 50 excess food required for one pop to become two. Also, the other numbers (energy and minerals) are fairly smallish, so there's probably not enough resolution there to support real-valued pop numbers. I agree that it's disappointing.