2021, 500k e-bikes sold in the US vs 15+ million cars. That's to a population that is already saturated with cars. Even looking at 2-3x growth of e-bikes over the next decade, that still doesn't sound like your assessment is accurate. Cars are still much more popular in the US and going to be in the near term future.
You're probably correct about the U.S. but that does have built in car dependence. Worldwide, e-bikes and e-scooters are a very useful additional option for a lot of people and here in Bristol, UK, I see more and more of them everyday (assuming that's not just confirmation bias).