If the flow of traffic is 65mph and you are going 50 on the free way, you are an absolute danger. You cause other people to have to slow down or worse move over. When people move over and are going slower than the other lane, you make that lane slow down too. I have witnessed it several times, when trucks go 35 in one lane, they cause a near huge traffic build up just in their area.
Regardless of how much you try, you can't defend the fact that large amounts of people intentionally break the rules on a regular bases by saying that those who stick to the rules are somehow a danger.
If the speed limit is 50 and someone drives 50, then everyone else who is actively breaking the rules by driving 65 somehow gets the right to call
them a danger?
There would be no need to slow down or change lanes if everyone would stick to the speed limits to begin with.
It's not the minority that sticks to rules that's the danger, the danger is the majority of drivers who break the rules on a regular basis, both the douchebags that speed up the flow of traffic beyond the speed limit AND the idiots that follow up on that instead of staying at the speed limit.