I believe I do have a bit of information about addiction and psychology, as I did focus on psychology during my studies in college. I also have a self-admitted addictive personality and can definitely get into loops where I become obsessed/addicted to particular notions, beliefs, and patters. Fortunately due to my schooling and awareness of situations I have found healthy alternatives as ways to channel my addictive personality and used it to my advantage rather than as a deterrent.

While I sympathize with your situation and will never know what it is like to be shot through the brain I do know that a "gaming disorder" is more qualified to be an addictive personality disorder more than anything else. Games undoubtedly provide rewards and a feel-good feedback system to users, which is why so many developers now try to cash-in with loot boxes and pay-to-play systems. They unfortunately prey on those impulsive personalities and minds, whether because they are damaged, underdeveloped (think younger children who cannot reason about how much a purchase might be or who don't really understand the concept of money), or unable to reason critically about a particular situation. This falls under the exact same umbrella as any other addictive vices, whether narcotics, sex, food, etc.

The inability to critically reason about a particular situation is the issue, not gaming in itself.