No. No one is 'forced' to exceed the limit, not remotely, and there are plenty of drivers who, for a variety of reasons, drive at or under the speed limit (many large trucks, for example).
On a highway, driving slow in the left lane is not good, but doing 65 in a 70 in the right lane is perfectly fine.
> No. No one is 'forced' to exceed the limit, not remotely,
You never get tailgated when you go too slow? People do it all the time and it's dangerous as heck.
You need to be glued to the right lane though, or be willing to speed while passing even slower traffic, or you will definitely mess up the flow.