Not just incompetence, nepotism at the top and failure to adapt and change with the times (as in be completely disbanded and replaced by a cyber warfare department) but wouldn't be surprised if it's also a lack of respect.

Trump literally walked into North Korea, no guards came back unharmed, Obama was at least a fan of drone strikes and Bush had Dick Cheney when he was full Darth Vader. This current administration, NO ONE respects them so why not get rid of a few spies, informants and leakers when you know there's no consequences.