Clump style is one of my favorites. And I love this species.
The advantage of clump style is that it can be created from young nursery stock in a relatively short time, using juvenile material that doesn't have much character. And yet, the result is very pleasing. So, for people that want to do bonsai on a budget, this is a great way to start.
If you take any single tree from the clump, the result is uninteresting. One will have to grow the single trunk tree for a long long time before it gains any character.
However, multiple trunk styles create extra interest, as a whole, by the virtue of the more complex design.
It's the same scenario as in the case of a young forest, when the individual trees wouldn't cut it as bonsai, but as a group, they create a pleasing result.
Clump is very easy to create, and it is a vastly underused style. One needs to buy 5 young nursery trees of varying size and thickness, chop one side of their root system in order to be able to pack them together, and tie them together with a wire. In a few years, you have a powerful fused nebari, and plenty of design options. You could never achieve the same result with an imature individual tree in such a short time. The other advantage is that it is virtually impossible to create a bad surface root system, since you are using multiple trees and can twist them any way you want for a perfect nebari.