The hip thrust can be used as a main lift to build strength and a great posterior chain, but also as an assistance exercise to finish up an already taxing lower-body workout.
Since using a dumbbell limits the amount of weight used, focus on maintaining a slower tempo and do more volume. I cue athletes to push the dumbbell toward their knees on the way down to ensure a full range of motion.
Thibs is on a mission. The angry Canadian wants to see the incidence of training stupidity decrease. Are you a "kitchen sink" trainer or coach? Have you misinterpreted the concept of overtraining? If so, duck!