Japanese and South Koreans proclaimed themselves a stealth power not because they had stealth fighters but because their ally, the US, had them. They did that to belittle China and find an excuse to claim they were superior to the Chinese. Then the J-20 came out and now South Korea and Japan are scrambling to develop a stealth fighter of their own for almost now a decade. See how their pettiness will take something as simple as being an ally with someone who has stealth fighters to mean by defacto they have stealth fighters blows up in their face? It's just as worthless as being "liked".