In an effort to deal with the passive-aggressive wankers that squat in the fast lane, some states are trying to educate people that it is about traffic flow and safety, not the marked speeds.
And this 'education' includes giving drivers the idea that there is no speed limit at all in the left lane? That they have the right to tailgate and flash their lights at people who are driving with, or even faster than the speed limit, and the traffic flow in the left lane? I highly doubt this 'safety education' you speak of says the existence of a left lane means you can go 90 in heavy traffic and everyone should just get out of your way.
When they stop citing speeders, I'll believe it. (All my tickets, other than two for parking where I shouldn't have, have been for speeding.) For even more impressiveness, they can do like Montana did for a while-- abolish daytime speed limits-- or post "Recommended Safe Speeds" with enforcement only happening after a collision.