My OWD was in 1996, when things were somewhat different. My wife and I did it the course on a lark on Elba/Italy. The instructor was a local celeb, having written the go-to guide to dive spots there, and a very competent if somewhat reckless diver. Nobody owned computers, so we did a few days of charts. No pool, so we did all the exercises in a little bay just off the harbour, in the sea. The final dive of the course, the instructor took us down to 36 m to look at some amazing fan coral off Porto Azzurro (we had been to 25 m or so before, if I remember correctly, we did three actual dives besides the training routines). I like to think he did that because he had gained the impression we could handle this (but we all flatter ourselves regarding our actual abilities, especially when young and stupid). Not recommended, but it did work for us. We are still around, 1.000+ dives (and many pieces of plastic) later. Did the course prepare me to start diving? Yes, it gave me the (in retrospect arguably wrong) confidence that I could deal with unusual conditions and a healthy respect for how dark and cold it is down there and how attentive you want to be to your chart and gauges (or now, a computer you understand and carry a back-up for). Would I recommend this as standard training? Hell no! But I coasted along quite well over many dives on the strength of the OWD, improving all the time, before throwing more money at certs (mind, I‘m glad I did that, too). I guess I got my money‘s worth from my OWD, and it did prepare me in the sense that nothing so far has killed me in almost 30 years of diving between the North Atlantic and the Tropics.
Respectfully, C.