this may be a big angle, esp. for lots of poor people (which is a thing in brazil), as it gets them secure transfers.
getting cash remits from the gov was/is a huge challenge in india, for example. lots of people qualify but don't have a bank account or card or other basics.
Last time I went to Brazil I remember that at least twice I asked if the person seeling me something would accept Pix in place of cash since I generally don't carry any cash, and they happily accepted even if they didn't advertise this.
This fragmentation of digital payment methods has had a... less than optimal effect on European payment traffic, with a lot of e-commerce going through American payment providers like credit cards (Visa, Mastercard mainly) and Paypal. A lot of internationally operating online outlets have added support for iDeal over time though, so hopefully Wero will be deployed very fast.