There will always be people in power who use that power to stay in power, its the human condition. The best thing we can do is build systems to help people have free expression that can't be censored.
Let me try and understand you, because jet says its good to have platforms/tools that allow for free anonymous expression like Lemmy/Mastodon/VPN/TOR/Zeronet/etc.. this somehow is an attack against the mods on Lemmy?
Then why didn't you just write that instead of reported? Because of cause the fediverse is not free speech absolutist place, but it's more free than a corporate form.
Technically, we could say if the internet was extremely censored and blocked any access to Twitter or VPNs, he wouldn't be sentenced to death for that reason (but probably killed for another bullshit reason)
It still relies on government infrastructure. If a government really wants, it can tell its CERT to block some IP range and probably protocols too. If you can block for example torrent at university campus, you can also block it on a country level.
I remember hearing around the time of Occupy Wall Street about a guy that wanted to create a fully civil network. Everyone wanting to be a part of it would set up a wi-fi node in their home. It seems the idea did not get traction, though