As others have said, this really seems like a hatchet job on Matrix. - Complains about no "authoritative and independent source" for a count of Matrix servers

As others have said, this really seems like a hatchet job on Matrix. - Complains about no "authoritative and independent source" for a count of Matrix servers or clients or users, but I'm not aware of any such thing existing for XMPP either - Cites WhatsApp and Zoom as XMPP implementations, which may or may not be true, but is pretty much meaningless w/o federation or the ability to use a different client - As far as I can tell, it's not any harder to test experimental extensions to the Matrix protocol as it is to XMPP - the author makes up several extended forks of Matrix here that as far as I know, do not and have never existed - Seems to regard corporate sponsorship as inherently suspicious, which seems at odds with citing WhatsApp and Zoom as proponents of XMPP - They're right that Synapse is much more resource hungry than something like Prosody, but they exaggerate things to quite an extreme degree. I know of several successful Synapse deployments on Raspberry Pi, one hardly needs a "supercomputer" - Seems to be very confused about how Cloudflare and Let's Encrypt work, there is nothing stopping you from using either or both or neither with both XMPP and Matrix