I agree it’s unlikely he’ll get a lot of time if convicted on these particular charges. That said, any accountability he receives is a benefit to society. That’s the point of it all to me…
Him facing even a sliver of accountability is a victory. As the narcissist he is, it hurts him emotionally to his core. And more importantly, it hurts his con game and provides a crack in his appeal to his cult base. He no longer appears to be such an invulnerable winner.
And it will likely stop him from committing other crimes. If only because other people will help him less. When they see him actually face some accountability, they will be less likely to think they’ll be protected by being near him. And they’ll know that, being less famous and protected by politics than him, they are more likely to actually do time.