I haven't been following it since 2006 or so, but unless it got simpler since then, yes it very much is still too complicated. It does get the job done, and is in widespread use, and has multiple server and client implementations, which makes it a gazillion times better than almost anything else out there. Hats off.
It was unbearably chatty - to the point of being unusable as a server-to-server protocol in a high-load environment in 2003. internal protocols (and even external protocols such as OSCAR, ICQ, and MSN Messenger) required 10% of the bandwidth and 10% of the CPU power. Jabber was usable but very expensive as a client-to-server protocol.
Nowadays, CPU is much cheaper and so is bandwidth, so these problems are gone. And perhaps clients are better behaved and standardised now (I have no idea how video, file transfer, etc are handled these days; the answer back in the day was "not at all, or in a complex and non standardized way").
It was unbearably chatty - to the point of being unusable as a server-to-server protocol in a high-load environment in 2003. internal protocols (and even external protocols such as OSCAR, ICQ, and MSN Messenger) required 10% of the bandwidth and 10% of the CPU power. Jabber was usable but very expensive as a client-to-server protocol.
Nowadays, CPU is much cheaper and so is bandwidth, so these problems are gone. And perhaps clients are better behaved and standardised now (I have no idea how video, file transfer, etc are handled these days; the answer back in the day was "not at all, or in a complex and non standardized way").