YNRK has empty / near zero patronage and mostly trains get filled from HW. However logic of shifting trains left and right from a state capital city is puzzling & seems like IR has conveniently ignored DDN. As a child in 90s we had more trains with better connectivity. Post "redevelopment" of station people of Doon have been fooled by reduction of trains.
Plus DDN has no connection to Southern & Western India. It could be one of the only capitals having no train to Mumbai, Chennai, Hyderabad, Pune, Ahmedabad!