That's a good point.
POTUS takes his promises very seriously. He promised to drain the swamp. If it wasn't for Q (not just Q's posts themselves, but the effect Q's posts have on deep state activities, the media, and the alt-media) we would have little knowledge of the swamp draining that was occurring. We would think POTUS wasn't doing much of anything on that front.
He wouldn't have a digital army ready to defend him when the press accuses him of trying to jail his political opponents.