Yeah, basically every public charger in the continental EU is going to be on the intercharge network.

I'd love it if that's now true, has there been some change in this?

Last time I looked into it InterCharge (OICP) was still just 1 of 4 competing protocols along with OCPI, OCHP and eMIP.

Has OICP displaced the others now or are they still fighting it out?

I don't know and I don't think an EV driver has to care. Maybe it's not all intercharge, maybe there are more networks in the background.

The salient point is the consumer perspective: I can have one generic app to handle charging payments for basically any public charge point and I interact the same way with all of them, I put the plug in my car and scan a QR code.

The debate in that unified market is more about price discrimination, because prices at a given charge point may vary depending on who operates it versus who your e-mobility provider is. Which is quite annoying in itself and should be fixed. But paying 59 ct/kWh vs. 69 ct/kWh is quite different from having a dedicated "car charging apps" folder on your phone.

0 accessibility and government happily funds these companies.