When you need to look at something “at its core” you acknowledge there is a lot more to the situation then just the core of it. The core of HTTP, IRC and just about every other protocol is very simple too. That doesn’t mean that XMPP is all that great and in fact once you get past the core you run into a nightmare of specifications, “great ideas” and fragmentation that got completely out of hand a long time ago and the reason why many people moved on from it.
When you need to look at something “at its core” you acknowledge there is a lot more to the situation then just the core of it. The core of HTTP, IRC and just about every other protocol is very simple too. That doesn’t mean that XMPP is all that great and in fact once you get past the core you run into a nightmare of specifications, “great ideas” and fragmentation that got completely out of hand a long time ago and the reason why many people moved on from it.