The central point, which I think is a failing of todays flight training, is that the crappy patch of rough ground a few hundred feet long that is right in front you is likely to be discounted as a viable option because it doesn't meet the "right" criteria and so pilots are trained to turn towards the "good" field
Not talking about a "crappy patch of rough ground" but in one case, open sea, and the other, busy built up industrial areas with all manner of obstacles, and I would suggest if you only have ONE small crappy patch of rough ground surrounded by complete no go areas, the sort of pilot who would reliably get in there probably has the same level of experience as one that might be able to cope with a turnback!