It's not possible to register the same phone number (or email) at two banks simultaneously. The last registration wins and the associated bank account will switch on the backend when you try this.
Also, EU bureaucrats have little to do with it. Wero is the third attempt by a subset of private European banks to establish a new pan-European payment network.
[1] https://support.wero-wallet.eu/hc/en-us/articles/25599201237...
Wero is an initiative from a group of European banks united in EPI (European Payment Initiative). The tech is partially based on the Dutch iDEAL (which EPI acquired a few years ago).
iDEAL has been around in The Netherlands for 20 years and is used for most Dutch online payments (also supported by Shopify and Stripe) and P2P payments through Tikkie/betaalverzoek. The whole system is really nice and smooth and definitely much nicer than PayPal in many ways. Almost no online stores use Paypal here because iDEAL works so well.
Given this history and the iDEAL people working there, I'm sure Wero will be fine after a few iterations.
That's good to know that Wero for online shops is "just" iDEAL rebranded, that was news to me. There is an info page here: https://sowieso.wero-wallet.eu/nl-en/consumer
And I've always wondered, isn't it kind of unsafe, if someone gets my number, they can learn where I store my money and what my name is.
Dunno about the desktop, but if you're on a phone, there's often a button "open in the bank app". I actually like that you need to approve it in the banking app, it's like a single source of truth no one else but me has access to. Dunno why it would be "way slower", it's just an additional click?
I don’t imagine that’s so very hard to implement later though.