String, I am glad you agree.
When I first started diving just over two years ago I looked at the OW cert as similiar to getting my learner's permit to drive a car. When I got that the first thing I did was sign up for some driver training because being a teenager doing this could be difficult with a parent, a professional trainer would help me quickly master what I needed to know to be a safe driver and it was supported by the stats behind it.
I would recommend that any new diver discuss with their instructor what sort of things they should be doing to get the most out of the time and money they have put into the sport so far if they wish to continue. Its just not training as well, it could be come out to the drop in dive at the shop, join this local club, but for training after doing a proper OW cert there is advanced open water and bouyancy that are ideal for the new diver. Certainly not thinking about trimix rebreather diving with decompression penetrating wrecks so I think I completely understand the waiting till skills are to a point before proceeding with some training...
I don't think it is a good idea to say to people coming into this sport that after OW they need to go out on their own and then come back to training after they learned a bunch of bad habits, realized they aren't right, then unlearn those habits with the right ones before they can get good coaching. When people say you have to get compentent before you can consider further training, that is what I see. It is an elitist attitude intended to discourage and it is not a good one.