Yes but he could never beat Bivol without the help of the judges. Now that they honored him with the undisputed title, he can retire with this honor. In the rematch the title goes to the rightful owner.
He's going to need to increase the frequency of his fights considerably to fit in a further 203 before he retires.
These guys with 300+ amateur bouts who started pro fights at 25 or 30 will never have the resumes of the older boxers. Big argument on this forum is Loma as ATG...he's had only 21 fights. That's a slow year for the Norfolks and Grebs of the past. I would put them around 20-25 or so.