As we follow halacha, this really has no impact on us (anymore than a statute regulating how much cheese goes into a cheeseburger).
Inapt comparison. B’nei Noach are permitted to eat cheeseburgers. They are not permitted to engage in arayos.
Also false is your assertion that it has no impact on us.
רבי הונא בשם רבי אמר: דור המבול לא נימוחו מן העולם עד שכתבו גמומסיות לזכר ולבהמה
מדרש רבה