And if you still want and have patience to read about the pros and cons, here's what I have to say
EVERYTHING DEPENDS on the application technique and the professionalism of the producer. it depends on the thickness of the layer, the correct method, the correct processing temperature, etc... following all these factors, the durability of the material is directly proportional. it is practically impossible to detect how correctly and professionally the material was applied when you buy a new watch. it remains to trust or not the brand/factory that produced it.
of course, it also depends on the impact with which the watch interacts with other surfaces. of course, if it falls heavily, not only the PVD layer will suffer, but also the base material itself, which is usually stainless steel. in any case, if such an impact did happen, I know for sure that the specialists do NOT recommend a polish process. first of all, it will not solve the damage. secondly, the correct technique would be to first remove the PVD coating, to apply it repeatedly (to close all the cracks), and only then to polish.