Keep in mind that a Sim is a Sim and not a real person. If you don't like a pre-made Sim created by someone at EA/Maxis then feel free to edit them however you want to. I've replaced many pre-made Sims with my own in order to balance the population in terms of gender, age, aspirations, traits, and careers. The majority of my family households have two parents because that's what the game prioritizes when sending Sims to nightclubs, festivals, and social events. I'd rather see my own Sims at those events instead of Maxis pre-mades. I also have a lot of single-parent families that the game basically ignores for some reason. I take that back - Single parents do get to go to restaurants with some random adult Sim, but never with their children.
I don't have Eco Living but I know that I'd replace most, if not all, of the pre-made Sims based on what I've read about them. Some of their traits are awful and it seems that some traits were manipulated which usually ruins a Sim.
I agree that male Sims have been under-represented for a while but we, as players, can change that. Personally, I wish that EA/Maxis would either stop making pre-made household or make better ones.