Uh, I mean, I understand the sentiment of victim blaming is that people being ****ty don't get an excuse from being ****ty because of the victim. It only works for some contexts though.
In this case we're talking about a leaker. The reason gaming companies control the flow of information and the pacing of reveal is to mitigate for this sort of stuff and keep spirits as high as possible. If Vergeben decides to be that person that goes in and tells people out of turn, then yes, he should expect this.
This isn't a service anyone asked him to do either, nor is it something anyone is forcing on him. He is consciously deciding to be this person, and it's not a systemic problem that fans have different perceptions, desires and defense mechanisms... it's an outright reality and we cannot blame the fans for being disappointed and wanting to NOT believe a random guy on the internet.
It's like if the government hides that the world ends tomorrow, and some person decides to leak ahead of time that the world will end and mass chaos ensues. If that person gets torn apart by rage and anger from people, that's on the person, and saying "victim-blaming" doesn't excuse the fact they should have expected this.