I don't think so, because there are companies in Germany that build American-style houses that adhere to German energy efficiency rules, like https://www.boston

I don't think so, because there are companies in Germany that build American-style houses that adhere to German energy efficiency rules, like https://www.bostonhaus.de https://www.bostonhaus.de . They use different windows and doors to achieve this, and it's certainly more expensive than a house built to American standards, but it's not fundamental issue with American style construction.