He used a ghost gun reportedly printed on a 3D printer and had several fake IDs. That was the extent of his evasion.
He was valedictorian of his elite private high school and attended an Ivy League university. He was also an athlete. By all accounts, he was an accomplished, ideal young man. The news accounts from there are sketchy. He had spinal fusion surgery "back home" before returning to Hawaii. His family lost contact with him for over six months. In short, I doubt his SD career had much to do with his physical/mental situation and his murder of the UHC executive.
It seems like he didn’t really do too much besides wear a mask and not use a real ID?
If you think like a hacker, you will always be able to evade and exploit weak systems to some degree.
it only took a week to catch him. this is not unprecedented in murder cases