@network_is_reliable @signalapp The only way to "ban ECH" would be to ban the internet entirely. If ECH is part of the TLS handshake then you can't ban it any more than you can ban HTTPS. You would have to disallow any browser that uses it as standard, firewall off any traffic that uses it, and basically stop existing on the internet.
And you'd still get fucked by a VPN.
@krangled @signalapp ECH is just a TLS extension, and it is blocked in Russia, as I said. You can establish a connection without it, but ECH and eSNI (previous attempt) are banned. And yes, Russia is country which started to block Signal messenger today, and a few weeks ago started to slowdown and block Youtube. So yes, they can break the Internet as they want, despite the collateral damage.
So relying on ECH is not an option for countries like Iran, Turkmenistan, China, Russia.