This is true for any receiver. The fact that these are the only routes they ask him to run suggests that the OC isn't seeing him the way you would like.
As for efficiency, it is more properly measured in actual outcome per touch/target (yards per, 1st downs, TDs), not by how many short gain passes you didn't drop.
Based on the average outcome per touch, Kincaid is 6th among all receivers with at least 5 targets.
They need to send him farther past the LOS...
As a blocker more so.