For IT professionals the risk doesn't seem very high. Just running tor exit-nodes is not illegal. There are enough jobs in IT where you don't have to worry about any kind of government approval.

There are lots of stories about people who in one way or another got in contact with the intelligence agencies and nothing really bad happened to them.

Of course, agreeing to secrecy and then spilling the beans is not recommended. But in this case the agents decided to tell him stuff without any kind of agreement.

i think it's commendable that he told this story at risk and cost to himself for the benefit of providing intelligence to the hacker community