I'm much younger than these Gen Xers and Millenials, but it feels like Japanese style cultural impact is much larger now than "western style".
Heck, KWave, KDramas, and Manhwa are heavily based on Japanese JPop, JDramas (the GOTO back in the 2000s before Sony made licensing expensive), and Manga.
> view xenophobia, fear of change, and cultural/economic death grips by an older generation as negatives
Japan has also changed a LOT demographically over the past 20-30 years - before foreigners were mostly Zainichi or Taiwanese plus a smattering of Chinese illegals, but now you have 2-3% of the population from ASEAN, China across all economic stratas, Koreans from Korea, etc but they all look "Japanese"