I will say we went through a similar experience, where a routine police investigation was never properly conducted in the beginning. It is likely because the original detectives were leaning towards Bryce being a runaway or scared kid who did some drugs and wrecked his car and they guessed he'd turn up soon enough (JMO).
TSBM
I have had a similar thought from the beginning. The initial investigators figured it for an intoxicated teen who crashed & ran off so they wouldn't get in trouble & really blew it off from there - only searching out of duty because he couldn't be found. They even said there didn't appear to be enough blood for a serious injury. Closed head injuries from blunt force can be deadly & leave little to no blood. They know this. I think they were trying to downplay concerns. JMO