Why I told my friends to stop using WhatsApp and Telegram
Romain Aubert

All good, but as we recall from the Snowden disclosures our adversaries use selectors — (show me all the users of Signal and xxx search) and there’s probably no messenger more interesting to the NSA and others than the users of Signal. For this reason I currently avoid it, and use a widely adopted messenger and impose a communication standards like NPN (no proper nouns).

Full support for the article and getting more users on Signal as wide adoption and mundane use will contribute to make Signal users safer.