What Developers Get Wrong About PSD2 and Payment Initiation

I've spent UK FinTech Week (April 20–24) reading developer threads about open banking. Same misconceptions every time. PSD2 is "just OAuth for banks." Payment Initiation Services are "basically a bank transfer." The whole open banking stack is "Stripe with worse DX." None of that is right. And the gap matters, because the developers carrying these assumptions are the ones building the next wave of UK checkouts. If you're shipping payments code in 2026, here's what I'd want you to know before you