Gamecock... our Honda has the same restriction but I have coasted many times to over 70 mph.
I have even driven with my cruise set at 70 mph. When the speed limit in Texas is 80 mph, I don't want to be going too slow. This is our second Honda. We drove the first to almost 70,000 miles of driving plus another 57,000 miles of towing. No problems with exceeding 65 mph (on occasion).
As I mentioned, we will go over 65 mph but not too often. I think it's just a 'safety reason' for Honda to list that. I wonder how they would know if a car is towed at higher speeds?
MM.