John,
Even if you've got a really wide fairway and no advantage for being on one side or the other, it still might not be smart to hit it as hard as you can. Say I've got a 480 yard par 4. If I take a normal swing and catch it well, maybe it goes 300 yards or so, leaving me 180. If I miss it somewhat, it might go 260, leaving me 220 which is still an iron so its fine (as a 6 I don't expect to average 4.0 on a 480 yard hole no matter how wide open it is) Now if I tried to really bust it, if I pull it off say I hit 330 so I'm at 150 instead of 180, which isn't really worth it in my book. Especially since that big ass swing brings in some really ugly hits way off the heel or toe that might go more like 210, leaving me out of range to reach the green at all! And I'm ignoring the offline stuff in this analysis, and the harder swing obviously can bring me more offline which puts me even further from the hole.
Now maybe that applies less if the hole is 380 instead of 480, but even then I can't drive the green no matter what I do, and being 50 yards intead of 80 isn't a particular advantage either so again why should I try to bust it to all hell just because I've got enough room to handle some really crazy offline shots?
Even holes without strategy have strategy for players who aren't good enough to hit every shot nearly perfect like a top pro can. Maybe its worth it to Tiger and Phil to try to really bust one because they are good enough to get that extra 30 yards most of the time, and good enough to take advantage of that 30 yard shorter short into the green most of the time.
Not trying to argue a wide open hole without strategy is good, mind you, but unfortunately most of us don't have Mucci's connections on every great course in the country, so we do have these types of dilemmas.