Nobody cares if you jaywalk as long as no children are around. If there are children around, most people will avoid crossing a red light even if they otherwise would cross. But that's not a rule-following thing, it's a "don't set a bad example to children" thing. It's easier to teach children the rules about how to behave in traffic if you have fewer adults obviously violating them.

That would make sense, except that one of the universal rules of childhood is, "Adults get to do things you don't get to do, usually for damn good reasons, so get used to it." Every child knows this in their bones, even when they don't like it.