The same with messaging apps.

I don't use SimpleX (or any other) because the people I know, the people I interchange messages with, only use Whatsapp.

"But, tell them about the wonderfull privacy features of

No, I don't install Whatsapp to talk about Whatsapp. Same with Arch Linux (or any distro), messaging apps, desktop environments, chandals with white socks, being forced to mention GNU/ before Linux, or the ending of Evangelion.