This is generally the situation that prompted my post. When I pass on the left, I will speed up compared to the rest of the traffic flow before moving back to the right, but I still leave plenty of room just in case I need to stop or slow down. People behind me or in front of me don’t usually tend to do that.
I hate seeing a clump of like 3-4 cars in front of me all bunched together hitting their brakes in series because they didn’t leave room between them while the guy in front is already doing 80mph or something.