Your hyperbole in the first paragraph diminishes your credibility for the second. Guessing you didn't watch the games but just looked at the box scores? In Tournament of Nations, Japan purposely started/played younger players, including the goalie who will not be the starter come WC. Japan controlled much of both of those games. Home field advantage in ToN too. USA made some good shots/goals and they were good wins in both those games. But there was certainly no "destroying" going on. This is the mindset that sets up future failure. Superiority complex despite reality. USA's #1 ranking is padded by all of the cupcake victories they get over Concacaf countries (sans Canada) and other low-ranked countries. E.g., next game...Chile.
Japan is also known for keeping youth playing small-sided into High School...5v5, 7v7 to emphasize skill/technique. It shows on the pitch.
Any reasonable person (and even most unreasonable) will concede that the World is catching up to USA women. 2019 WC will be Exhibit A.
Last, I will give credit to Ellis for rotating a lot more players through the system and giving caps. Some of it is due to injury but much of it is to get looks at different players; the way it should be for all these friendlies etc. With the depth in the USA, there really shouldn't be players over 30yrs old on the team. There is no Ronaldo or Messi (on the women's or men's side).