You suppose that they don't know that. You suppose that their motives are to improve your survival rate, ie to protect you. You suppose they are uninformed, erroneous, lack historical knowledge and sophistication. That they are basically unknowledgeable, and uninformed. That they opt for (unattainable) perfection, destroying unwillingly freedom in the process. Basically, you assume they are "stupid".
That's, (without you wanting it,) arrogant on your part. "They don't know/understand". You don't give enough credit to the enemy. Things get much clearer, all over the place, if you suppose instead that the people in charge are NOT actually "immature", "stupid", "uninformed", but instead that they target your civil liberties in the first place, for personal and their sponsors' gain, and that caring about you and me, are just convenient excuses.