

What?
I don’t think you know what centralization/decentralization means.
On matrix, you scan spin up a server/instance and communicate with any other matrix server/instance. On Fluxer, if you self-host, and your friend also self-hosts, your instance/server cannot communicate with your friend’s instance/server. You would have to create an account on your friend’s instance/server and vice-versa. You would also, probably, have to be running two clients in order to chat in both servers/instances.
Americans are such a passive people. Their state can commit the worst atrocities, no peep from them. If this was any EU country, heads would be flying.
EDIT: After writing this, I thought and I disagree with my own statement. People suck. All people, generally. Some are a bit more passive than others, but generally, humanity sucks, people suck. We value comfort way too much and are not up to give up 0.1% of it, even in the face of atrocities. Principled people are very rare.