I disagree. It's easier to do none of something addictive than it is to do a little. Your advice goes against what most addiction specialists purport. Obviously this person couldn't manage the vice in the past, so he should avoid it.
We’re not talking about an alcoholic cutting down to a couple of drinks. So maybe there’s merit in it. From my experience, running cheats gives short term fun but then can ruin the game.
Cheating works for me, because the addiction is not directly to the game but to the sense of accomplishment that I derive from the game, and often the anticipation too. Cheating removes that accomplishment and allows me to lose interest in a game way faster.
Can you elaborate on the advice of addiction specialist? What would they propose to do here instead?