I think the point that's missed (especially by you) is that proprietary, closed source software is fundamentally more insecure than open source.
As a user of proprietary software, you can't inspect that code for bugs and you can't inspect it for malicious code - you just have to take the vendor's word for it that "it is really secure, honest! And there aren't any backdoors put in by the US government/china/whoever"
I don't know whether chatsecure is any good or would withstand attacks by a nation state, but if I were a security researcher or an aid organisation in the 3rd world, I could look at the source and find out.
As a user of proprietary software, you can't inspect that code for bugs and you can't inspect it for malicious code - you just have to take the vendor's word for it that "it is really secure, honest! And there aren't any backdoors put in by the US government/china/whoever"
I don't know whether chatsecure is any good or would withstand attacks by a nation state, but if I were a security researcher or an aid organisation in the 3rd world, I could look at the source and find out.