Wrong. Not maintaining a speed comparable to the general speed of the traffic around you is more dangerous than trying to maintain whatever the legal speed limit is.
Agreed 100%. I drive on two interstates on my way to and from work daily. Normal speed ranges between 70 and 80.
Multiple times on my drive home, I've been doing 80 in the center lane and been passed by an Illinois state trooper in the left lane going at least 90. Without his lights/sirens on.