I remember commenting about people going over the speed limit here on Lemmy, and getting so many downvotes from people who could never explain to me why they thought they deserved to go over the speed limit. Emergencies, with your emergency lights on? By all means! Going over the speed limit because you got up or left late for work? No bueno.
While I understand both of your points and views, the fact of the matter is that the speed limit is set to whatever it is, whether it be 65 or 70. You are aware of this, and daily commuters are also aware of this. In my eyes, that means it is not a surprise, or shouldn’t be, to anyone except travelers. This also means that you should be prepared for that commute at that speed limit. Unless it is an emergency, just follow the speed limit. It’s as simple as that.