Earlier quoted context omitted.
All the major banks in the US have supported online ACH or Zelle money transfers for over a decade now. ACH takes a few days, Zelle is instant, but there has not been a need to use 3rd party apps for many years.
Literally my point. Not all banks support Zelle. It's a 3rd party app.
And sure, there would have been no need for it to exist had the US government done its job 20+ years ago as opposed to waiting until the 2020s, but the reality is that most Americans have been able to instantly transfer money online using their bank for quite a few years now.