If stealth were in fact loosing their efficacy, then you would not have the Russians and the Chinese, Japanese, South Koreans, Israel, Australians, Norway, Denmark, UK, Italy, Turkey, not to mention the US and others spending wads and wads of greenbacks trying to stay ahead of the other guys, so while lots of folks say this or say that, the money is going into very stealthy low emissions, deep penetration aircraft, so follow the money, and talk as they say is cheap....
Everyone is working to counter the other fellows stealthy aircraft, and they are spending a lot of money to be able to do it right???? if it were a done deal and stealth was no sweat to pick up and shoot, that money would evaporate---"overnight", so the truth is that the F-22, B-2, F-35 at least are very scary to the bad guys, that's why we keep building them, and they will work, the poor little "wobbling gobblin" proved that, with only on bad guy shoot down in all those operations, and frankly it was a lucky shot, given that the aircraft operated the same little route each night until the shootdown???