The question isn't whether he was committing treason. The question is why would the author of the article omit this information. It's highly relevant, even if you don't believe it's true.
Again, the article's title ("Nobody is safe") is expressly written to invoke fear. The article's author could've written "... And he is accused of leaking information to the west; a flimsy excuse." or something, but they chose not to included that information.
The message is nice, but "being nice" is straight up not a good way to achieve immortality. The people you've affected will remember you but one generation out and you're forgotten. And that assumes people ruminate on the kind acts they've experienced a lot.
The people we remember are mostly remembered for doing grand things. Maybe that's not a convenient truth, but it is true.