There's no lashon hara (referring to unnecessary gossip about someone's personal life) in my report on Yossi. I don't delve into his personal life. I offer tentative critiques of his professional life. So no, he had no reason to run away from my questions of him and you have no reason for supporting (on the basis of lashon hara concerns) his running away from tough questions. Transparency and accountability are good for Yossi Klein Halevi as well as the Jewish Federation.
When I wrote on another industry, I listed the sources I did not want to offend. I listed the few people who I was so friendly with that I did not want to hurt them with my reporting. I listed the people or companies who did significant favors for me so people would know where I was compromised. Such disclosure would be good for journalists in general, including Yossi Klein Halevi. It was my asking for such a list from Yossi that resulted in a reply from him that he would not give me an interview.
But for Yossi Klein Halevi, at the time a 14-year-old Orthodox kid from New York visiting his relatives for the first time, the war also inspired him and a cousin to mark the Ninth of Av fast by eating a falafel.