[ezst]

> The article confuses confidentiality with anonymity/pseudonymity.

sure, but let's not pretend that the distinction is lost on Signal and serves to fuel their security theatre.

> My grandmother cannot, but she can use Signal and she will be one user among millions.

And she will not be better-off than on WhatsApp. Even assuming that Signal is a good actor today (and, surprise, it very much is *not*: using a 3rd party client is against their T&C, they have a history of pushing their crypto to your face, their marketing is based on blatant lies, …), she will be back to square one the day inevitably Signal flips.

The case I'm making here is for federation. I skipped the whole Signal stage. My family and friends (including grandmother) are now on XMPP instead. It has all the guarantees you might desire from Signal without the hanging sword of Damocles hanging over your head.