@penguinrebellion@tldr.nettime.org Signal is not good.
They seem to absolutely love/adore Google, Apple, and Amazon. So much that they even hide the APK page on their website and only promote Google Play Store or App Store. Try find it on their website without using a search engine. Spoiler: you will fail.
And when you finally find the download APK page, Signal states it is “safer and easier” to get Signal on Google Play Store or the App Store. Easier? Yes. But safer? Only in your dreams.
They love/adore Google and Apple so much that creating an account without a phone number requires you to give your full legal name, home address, phone number, and credit card information to either Google or Apple (depending on what device you use).
And Signal love privacy and values yours, too. Oh, the irony.
So no, I would not recommend Signal other than Signal Protocol. Good news: OMEMO (the encryption method in XMPP) uses Signal Protocol. So with that said, I recommend XMPP instead of the Big Tech loving Signal.