Been reading all about this lately. Have tried thinking through the logic if different theories. Talked to my bf about it and he had some interesting ideas. Just ideas, no truth, don't know this missing young man.
My boyfriend did a lot of crazy stuff at Matthew's age (8 years ago) and thinks maybe he went up to the mountains to "day trip" he calls it.
He says he sounds like he was tripping, drove his car over some rocks, and maybe wandered off.
The last texts were kind of confusing, like maybe his phone was dying and he was lost.
Looking at the timeline, sounds like a lot of time passed since he became lost, if that's what happened.
How far could a young fit guy wander in this kind of area? My boyfriend seems to think if it were him, he could make it at least a couple miles in, what, like 12 hours? How long between him getting out of his car, to the beginning of the search?
Also, don't know at all how that type of terrain is. The drone pics show a lot of brush but from above it's hard to tell the angle of the ground. A low flying video from a drone might reveal a jacket or shoe of his, showing what direction he went.
Just thinking, just a theory.