That's an invalid argument. I am indeed saying that they should be removed from security related work because they don't understand people. However, it doesn't necessarily follow that Clinton doesn't understand security. In fact, it sounds like she was advised that she needed a secure BlackBerry, but was denied it but never given a reason.

All that you have shown here is that the people tasked with securing sensitive information failed to do so.

If Clinton becomes President, then she'll be provided with a secure mode of communication, regardless of what the security person thinks of it. So as President, she'll be able to access secret and classified information.