Charges were dropped because his daddy used political power to get little Little Matt off. No jail time, no public service, no classes - not even a fine. Rather than be a man, he asked his daddy for help.
Anyone who has an option to NOT be convicted of a crime would be a fool to pass on it. Beto did it too - this EXACT same thing. History is replete with politicians who got away with something. Campaign finance violations and perjury seem to be very popular among the ruling class.