The question was "Can the design of any programming language ever affect the security of crypto code implemented correctly within it?" This question is extreme

The question was "Can the design of any programming language ever affect the security of crypto code implemented correctly within it?" This question is extremely broad, and it requires envisioning future languages which haven't been invented yet, and looking for ways the design of the language itself might impact the security of crypto code implemented within it. That said, the question isn't the most important one. It was his third question which you and I both responded to.