I don't disagree, but whether you're even aware of the XEPs and how it's presented to the user, is a critical factor in viewing it as "confusing".
Gaim for example only even tells you about XEPs if you dig into the server settings, and then it shows a very good job of listing all XEPs from either the server or client and noting which are supported by each in a table if you're far enough down the rabbithole that this info is useful. But for a regular user they just log in and it Just Works (tm).
Yes I agree, apps should never mentioned XEPs. Most devs have no reason to even know about them, why would a user case? Some apps are built by protocol nerds and they like seeing the list. Maybe very hidden is ok but in general not something any user cares about.
How would devs not have to know about them? Say I want to write an XMPP-enabled app, how do I do it? Are there XMPP libraries that already implement all the required need protocols?
