Even a cursory investigation or education of passivhaus concepts would show this to be nonsense. Passivhaus is not focused on one metric. To achieve passivhaus

Even a cursory investigation or education of passivhaus concepts would show this to be nonsense. Passivhaus is not focused on one metric. To achieve passivhaus there are many metrics measured. Energy use, overheating, air quality, thermal bridging... The list goes on. I'm not sure what one metric you're referring to. Passivhaus does not mandate plastic based insulation. Many are built with cellulose, wood fibre,straw bales... They are not in any way more prone to water intrusion any more than any other building. They are far less likely to suffer sick building syndrome because ventilation standards are far higher than for 'normal' houses. You can open the windows if you want. Sure, if you do it in -10 temperatures you lose some heat. Passivhaus 'nutters' are generally apathetic about PV. You don't need PV ; simplicity is part of the point. The marginal cost on insulation is generally pretty low. The difficult but it's getting builders diligent enough for the challenge. Hope that helps to encourage you to continue researching the subject.