First no Venezuela was stable before US medeling.
Second, “is secure” is quite a leap, it is funded to a sickening extent by the United States government, has gone about a year before opening up its source code, and is in the US where there is a law that says if the US government says show us everything and keep quiet, they have to do that. There are real concerns
Or you can uncriticaly say “Athoritarian Country” with no defineing term there, or real understanding of Athoritarianism and disreguard all concerns from these countries.
Did I say the prefrence was to use normal telecomunication providers? or that the internet in general where super secure, no, but Signal is not secure either, and it in all likelyhood a honey pot