Well, respectfully, I disagree. fox wasn't, certanily, a powerhouse back in January 2017 (and I am saying that as a fellow Portuguese), and FalleN was a two-time Major champion. I think that, almost invariably, vanishes that "idol" effect.
On the other hand, fox was a stand-in, and SK Gaming could have opted to not break the tactical and role scheme, therefore forcing fox to play fnx's role. I think that would be a better option, to be completely honest.