Appears to be Hetzner for now, wouldn’t be surprised if all VPS get affected eventually.
A few years back they dropped some clients (including the one for my old TV) because they were dropping support for legacy SSL ciphers on their servers
TLS 1.0/1.1? Those were deprecated and dropped by the IETF with RFC 8996. You can’t even get a certificate using 1.0/1.1 anymore unless you are self-signing.
You can also allow unauthenticated users on certain networks, usually limited to your local nets. But I do agree that doesn’t solve the problem. I’d love to allow users to optionally use local authentication with, eg, Authelia, something built in, or an LDAP backend.