A shorter blade can offer more tip control as well.
I have a Ka-Bar TDI and a Benchmade Activator, two short, stubby knives like you are refering to. And they are, to put it simply, two of the most useful knives I own.
The TDI is an amazing SD knife, but the shape also works well for normal utility. After a day of cutting with a TDI, traditionally shaped knives feel awkward to the wrist, and larger knives feel clumsey.
The Activator is very stout, but small enough to be perfect for EDC. It has the advatages of a fixed blade (versus a same-sized folder), but takes up very little space. It's great for people that want the strength of a fixed blade, but at the size of a folded-in-half folder rather than an open Skirmish.
I like big knives a lot. In fact, my favorite type of knife to buy and use is a big folder such as the Rukus or Military. But small, stubby fixed blades can do 99.999% of everything these bigger folders can do, and many things that cannot do. Small stubby folders have many advantages as well as they can fold even smaller.
These knives are so useful because they offer enough blade to do damn near everything you will need to do in an EDC scenerio, are not any bigger than they need to be, but are also very stout and strong.
No, they are not camp knives, but no one knife can do it all perfectly. A camp knife would likewise suck for EDC.