I totally agree regarding JL. Seems to me that the JL connection (no pun intended), is key to this investigation. If the remains found are Xavior's, he was less than 5 miles from his home. So close to his neighborhood. Ugh.
That fact leads me to believe that it was someone he knew, someone CLOSE to him who caused his demise. Maybe he was sold into sex trafficking. Maybe the argument with Mom was over something having to do with JL. No telling what XH witnessed/experienced in his short life because of this creep. Maybe X had enough of JL, the druggie life that his mother got caught up in (even if JUST by association/NOT saying she was using) and threatened to call the cops himself. Maybe he saw something that he wasn't supposed to. Whatever went down ended tragically for Xavior and his Mom. SH may only be guilty of indirect harm by bringing JL into her precious son's life.
I pray that LE can figure out what happened and find justice for Xavior.