So she has been arrested, not jailed. We don't know much about this specific case yet but this has nothing to do with a rant, like you said.
ivn
Can you give an exemple of such case in the recent events in the UK?
Yes, to create an account, but not to contact someone. You have an habit of being off the mark.
Also there is a difference between giving your phone number to some service and giving it to some random on the internet.
You don't need the phone number to contact someone with Signal.
Metadata is data. While we can be pretty sure that message contents are secure we have to rely on trust for the metadata.
I use Signal and trust it way more than most other apps but still, one have to be careful, a state actor could still find ways.
Are people really jailed for rants in the UK? I've only seen stories of actual call to violence.
The Russian government has also allegedly begun preparations to block the WhatsApp messaging app.
https://kyivindependent.com/messenger-signal-blocked-in-russia-media-says/
Couldn't they block them too? Monitor the domains people connect to, check if it's a Matrix server and block it if it is.
The whole point of not being federated is not to call the other servers. I don't run a server but I hope it's not calling home if specifically configured to not be federated.
But you would miss all the numbers from non-federated instances.
The question of what should be done can be interesting, but that was not my question. It's obvious this is not the motive here.
If you are in your own country opposition it's better to use a foreign tool, even better if it's in a country that's not gonna collaborate with yours.
Why should testing be done over some allegation by an organization that's not recognized by the IOC?