I don't think there is anything fundamentally different. The only argument is scale and ease of use, but you could apply that to hiring poorly paid artists in a third world country somewhere like existing troll armies. A better question is would creating a law actually stop this? There's tons of ad fraud and misinformation already and my impression is the war is already lost. Most large platforms didn't have the kind of moderation to keep control of this kind of thing before. Small communities often do but they aren't usually the target and have less effect.