The slightest amount of difficulty or abstraction totally gate-keeps most people. Move the goalpost for accessibility by like 3 IQ percentage points and you see a massive drop-off in users (for the better). It's pretty bizarre and pathetic seeing these people gloat about, essentially, how stupid they are and how they're incapable of comprehending pretty simple, straightforward concepts.
The earlier internet was a much, much better place precisely because it was slightly more difficult to understand and utilize. The earlier internet was more difficult and more abstract than the fediverse. The simplification and appification of the internet and internet-connected services/networks has been a disaster for the human race.
@kino@kroner@MMS21@Burn Imagine how many people are on Matrix.org, and how many who are on other instances interact with at least someone on who's on Matrix.org. Unlike XMPP that keeps data local, Matrix actually makes full copies of all the data to each instance it gets in contact with, so in theory, even if you have no contact with anyone on Matrix.org at all and your entire MUC consists of nobody who's on Matrix.org, but somebody who's in your MUC has a friend who's on Matrix.org, then that metadata still gets sent to Matrix.org.
I haven't used Matrix for years now, so this is basically theory.
I haven’t gone through the code or anything, so I have no idea if this is an actual concern. But apparently the early development of Matrix has ties to Mossad https://lukesmith.xyz/articles/matrix-vs-xmpp/