This would not be an issue if it wasn't well known that Eddie is a good friend of Mike, and the rumour/announcement/leak concerns Mike's replacement. If he was a friend of JP, or JM or anyone else, it would be assumed that he has the inside track. If he didn't know anyone in the band personally, he's just another guy guessing and speculating, like us.
Instead, he knows Mike and everyone knows that, so that makes it weird somehow. He's just a guy whose job it is to talk and write about music. If he doesn't have the inside info, he didn't "leak" anything, so he's not being a dick and people should just chill.