Interesting. I don't work in defense / aero, but that seems plausible. Stealth aircraft are optimized to reduce cross section from certain perspectives. Front, bottom, and oblique are pretty good, iirc, while rear and side are harder to optimize. Not sure about top. I would think it would reflect most energy away from tracking radar unless an active seeker was coming in from higher altitude (in which case you are already toast).

Combined with some sort of chaff/decoy release, I could see this causing the seeker's kalman filter or whatnot choosing to go after the return which stayed on the same trajectory with the same signature.

Without a decoy, or with smart enough seekers (eg combined mm wave with IR), I think you are probably still going to be hit.