Al and Bill - you are correct about the foliage & jin. As I said in the blurb that accompanied the photo, that's my plan for later this season. Right now I'm just letting it grow out a bit to get some vigor. The other photo was taken much later in the season after the trimming.
cquinn, there are two reasons for the preponderance of jinned tops - no make that three. First, on this particular tree, if you look at the first photo, I think you'll agree that this was a very expedient process with this material.
But there is much more to it than expedience, and the other two reasons have to do with how trees age.
A tree that gives a look of age and antiquity is much more visually interesting than a juvenile tree, both in nature and in bonsai, in the opinion of many. Of course there are many more juvenile trees in nature than old growth denizens, especially with the logging of the past few centuries. But the old survivors are the most impressive and interesting if you know where to go to see them. And people do - no one goes out on an arduous trip to see juvenile trees.
Ancient trees, especially the fascinating ones growing in rugged conditions, are set apart by a number of characteristics. Their growth is more sparse, more unruly, less apical, more irregular, and this is especially true of their tops. The US Forest Service defines an old growth tree as one that has three characteristics: lack of taper, thick bark, and a flat or disorganized top.
Trees age from the top down. This probably has to do with hydraulics: the amount of liquid that can flow through a tube is proportional to its length. From the moment a seed sprouts, the "tube" that carries water from one end to the other increases in length. The roots ramify, but they usually don't back bud without necessity, and the tree's growth apically is also mostly outward. As the distance between the growing root tips and the growing apex reaches a limit, different for different species, the optimal amount of water and nutrients conveyed up to the apex begins to decline, and the tree starts to die back in stages from the top. First it flattens, then it gets disorganized, then it simply dies. It may continue to put out new attempts at apices further down, often resulting in the candelabra look, but most species don't.
So the tops of truly ancient trees are often dead, whether lightning plays a part of not. You can see this in old growth stands, and a marvelously illustrative photo will appear in the book I'm putting out this fall about Dan Robinson, who has lead the way in America in the naturalistic style. An increasing number of bonsai practitioners in America are becoming influenced by this style, and that may also account for the move away from the very artificial looking tops seen in the Japanese style, towards the naturalistic and Chinese styles, both of whom learned styling more by looking at old trees in nature than by merely looking at other bonsai.
Hope that helps you to understand the trend. People can still do the manicured juvenile tree look if they desire, but those trees all pretty much look the same after a while, and look pretty unintersting to a number of us.