I think on average yields will improve in quality over time and the average stable OC we see today will rise some within the next year or so.
So far that hasn't been the case with Ryzen CPU's of any kind. The clocks we get on day one are the clocks we get on day 366 for the most part. Ryzen CPU's have always been very much frequency limited. 4.1-4.3GHz is practically the wall with them depending on the generation. Sure, you can take individual cores and even some CCX complexes higher, but all core overclocking ends at the range I mentioned.