No, that is the problem. They worked with less and less websites until there were none left. I needed to install some packages, which I could just put on my own server.

And I have an old Blackberry Bold that now show current electricity prices, so I know when to starte my washing machine. That can also run on own webserver.

https://gitlab.com/nelgaard/elpriser

Technically the certificate issues are separate from the protocol versioning. It's just that clients that don't support TLS 1.2 often also don't support sha2 certificates or may not have a path to validate certificates from currently available CAs (although you can usually push through that; no protocol support and no cert signature support is not a user bypass prompt)

As a side note, barely anything supports TLS 1.1 but not TLS 1.2