maybe oversimplified:
things on screen take effort. less things, less effort
things on screen take effort. less things, less effort
(At least in enterprise software the data density typically depends on who makes the purchasing decisions. If novices and/or business folks are the ones making the pick then the software will look sparse. If technical and/or experts pick their own tools then it'll be dense and efficient.)
> Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.
That is the right reaction to over-complicated baroque creations.
Important to note, that oversimplification is possible. (There is point at which removal is no longer benefitial)
though, excessive white-space does not really scratch the "efficient interface" itch