What you're describing is the distinction between addiction and high engagement. The DSM unfortunately doesn't do a good job with this distinction as its criter

What you're describing is the distinction between addiction and high engagement. The DSM unfortunately doesn't do a good job with this distinction as its criteria for addiction are heavily based on chemical addictions. The DSM works like sorta like this: If you meet 4 out of 6 basic criteria for addiction you're addicted. For behavioral addictions unfortunately they use the wrong criteria (At least they did in DSM-IV). The only things you really care about are the negative consequences (as most people understand intuitively) and not some arbitrary number like "spends more than 60 hours a week involved in this activity."