I already used it in Belgium though...? "Pushed by Germany" is a bold statement when the technology comes from iDeal/Bancontact which are Dutch and Belgian respectively and France is also a very large economy in the mix. Don't forget about Luxembourg as well. Benelux+FR+DE is hardly an ignorable market. France is already abandoning its existing solution for Wero. That's always been the plan.
Do you care to source your claims? My understanding both the EuroPA and EPI are a private agreement between banks, but only the latter has received explicit backing from the European Commission. The EuroPA does not seem nearly as ambitious and only seeks to streamline existing national SEPA-based online payments (unclear to me what that means exactly in practice), which is a nice short-term vision for sovereignty but probably not where the EU will want to be 5 or 10 years from now. The big selling point of Wero is that you can be shown a QR code and use it to pay easily and instantly with extremely low fees, regardless of your bank.