It is no coincidence that super heroes have become such a huge draw for people. People are desperate for hope in what they see as hopeless world where the decks are constantly stacked against them and the big stack players are forever flouting their influence more and more over anything and everything. People feel like they have no chance for reprisal or justice in the face of such pervasive corruption. So when, suddenly, it appears like perhaps there is a glimmer of hope against all the odds shining through the quagmire of bullshit people will rally around that hope. They will take it point to it and proclaim it as a sign so that maybe, just maybe, that hope will spread and they can once again feel like their interests and justice are being served again.
So, yes, to many he is a hero because that's exactly what people feel like they need now to overcome the entrenched crony capitalism that has spread its greedy tendrils into every aspect of their lives. Here is to hoping that his example will inspire others to dare to hope again and fight back more and more against the ever growing influence of corporate interests and money in politics. Because if Mueller can take down an entire administration built around their own self interests and powerful connections then maybe the fight isn't so hopeless after all.
