After all these years it is suprizing to me how many people still don't understand "stealth".
Stealth technology is not limited to detection by radar. Stealth technology includes acoustic detection, thermal signature, and visual detection.
Designing an aircraft to incorporate stealthy radar characteristics is highly dependent on its intended mission. No aircraft is completely invisible to radar. Comprises are made to provide stealth where it makes the greatest mission benefit.
For a B-2 bomber it is penetration at high altitude that is of greatest importance. While on the dogfighting F-22 needs to be concerned all directional aspects need to be considered.
So before dismissing the benefits of Low Observable paint on a V-22, think about the V-22 mission.