Stealth technology uses angles in the aircraft shape, and homogeneous orientation of the surfaces. In the F-22A Raptor wing leading edges, tail surfaces, air intake bypass doors, refueling aperture, etc have the same orientation.
Incoming radar waves are deflected in a different direction, giving the enemy the impression that there is nothing there.
However, as mentionned in Wikipedia: "Shaping requirements detract greatly from an aircraft's aerodynamic properties. The F-117 has poor aerodynamics, is inherently unstable, and cannot be flown without a fly-by-wire control system."
I'd like to know what are the impacts of such planform alignment on planes capabilities, and how does a passive stealth shaping, using a small number of surface angles, compare to a "5th generation fighter"
This is a different question than Do similar angles on a plane make it more stealthy?" I'm looking for the advantages and disadvantages of using planform alignment.