How?
Matrix is completely busted, for the article's aforementioned reasons, and others.
My complaints is that ive seen child sexual assault imagery on your primary servers, hours later (and thousands of CSAM images) finally the user banned. And still does it cause some federated server they are connected to still allows them to be half-joined to a room.
The only safer way to federate is to disable image caching and preloading, and ideally defed from matrix.org.
And combined are the laughable moderation tools. I'm sure for some gov deployment, they're not going to spread child sex images. But on the public internet, even basic tooling is a joke.
I recommend all Matrix admins to discontinue. Its frankly too legally dangerous to run it, given all the various failure modes and E2EE failures.
Its 1 size doesnt fit at all. And it being gone would allow others to potentially succeed.
ActivityPub has the same problem. Browse a Japanese MissKey server and it'll start loading yours up with questionable drawings. I turned off my server FAST
This is a big, big problem for federated software that I have not seen addressed or even frequently discussed. Arbitrary file upload by the public is not something small operators can reasonably allow on their servers.
Even large operators of non federated systems with controlled access like Facebook struggle with this. It's impossible to protect yourself as a server operator on Matrix or ActivityPub from malicious actors that want to use your server to distribute illegal material, and you'll be the one found liable!
No thanks!
What I don't understand is how multiple governments and militaries are able to make it work. Are they using a reduced core-features-only version?
As a result, the popularity of Matrix in public sector has resulted in focus there - which is somewhat different to the expectations of folks looking for a Discord replacement or a privacy-at-any-cost solution.
Unfortunately, a Discord replacement is the sort of thing that the free software world actually needs, because in its absence people are just using Discord, even for free software projects.
cinny.in
OpenID Connect is another example.
OAuth2 has some worts, but I think it's worth the tradeoffs.