I think Hogan made that choice not to “chase angles” but to chase DISTANCE. As I mentioned, there are basically three choices: Hogan’s line between the bunker and the OB, the “safe” line to the opposite side of the bunker, bringing long fescue into play, and laying up off the tee short of the bunker. Most of those bunkers result in no more than a wedge to clear the lip, or maybe playing sideways, its just about a full stroke penalty. I don’t know how thick the fescue was at the time, but it can also be a full stroke lost. My guess is that he felt certain that he could take the left miss off the table, so he hit driver hoping to thread the needle, knowing that the worst that could happen is that he hits the bunker and has to play sideways, but also knowing that if he succeeded he’d be in the fairway with a chance to hit 3-wood near the green.
Also remember that he didn’t have computerized records of his driver dispersion, he just had his own eyes, and his experience practicing that week at nearby Panmure. He may have felt a confidence that modern players wouldn’t, with all of the information they have at their disposal.