Eh, not really. I mean, yes, but no. Based on terminology, I'm going to stick with the US demographic. In that setting, the peak 5 year bracket of millennials is currently 7.2% of US population and 23.8M people against a world background of 7.8B people. The boomer peak at the same age was was 8.4% and 22.7M people against a global population of 5.9B. So, yes, there are quantitatively more millennials now, and the number of millennials is larger at the same cohort timepoint, but as a fraction of population, they're smaller and will have a smaller effect on global affairs.

Globally, it's a bit different, the bulge of millennials is in fact larger by all measures, but that bulge isn't really driven by the US or Europe, it's the Middle East, and to a lesser extent, East Asia.

https://www.populationpyramid.net/united-states-of-america/2...

https://www.populationpyramid.net/world/2021/

https://www.populationpyramid.net/united-states-of-america/1...

https://www.populationpyramid.net/world/1997/