We all ride on seal coated highways. In my experience in states other than Texas, seal coat for the most part, is not a problem relative to rolling resistance. A smooth pebble rock is layered over the asphalt. In Texas, the rock is often a course, faceted, crushed granite(chips)with extreme rolling resistance. For motorist, it is very noisy. For cyclist, it is like pedaling into an 8 mph headwind vs rolling on smooth seal coat. It's pervasive in Texas.
How about your state? Do you ever, often encounter seal coat with high rolling resistance? When touring, have you delt with much course chip seal in states other than Texas? I haven't.
The question is asked to see if my Don Quixote like thrust to be aimed at TDOT has basis in fact. I bet they're trembling in anticipation.