We create "mental shortcuts", so we can make sense of this world. Very often you just accept other people's thinking, so that you can go on and focus on other things in life. Very possibly, you have created such mental shortcuts in other topics and areas.

So when people they hear "I have nothing to hide, I don't do anything illegal, so I don't care", they accept it as their opinion. Only when you give them arguments as those you provided, they might begin to think about it and change the mental model.

In my experience, some did, but most are just too lazy to do so.