It's actually surprisingly accurate because the castle has the legacy of a genocidal racist literally built into its foundations, and their society has refused to question or amend decisions made at the creation of the institution to enshrine an evil fascist as an inescapable part of their systems.
A person who was not a complete muppet could have done something interesting with those books. There's a clever critique literally right beneath the surface if JK weren't such a lib.
I think that's very normal, there's another thread here full of folks grappling with the same question of what praxis looks like in a time like ours.
I take solace in the reality that it's not about me as an individual, Lenin didn't pull off the Bolshevik Revolution because he was such a great guy. We reject great man theory, it's about a collective struggle towards a common goal. And while we aren't where we need to be yet, we're a hell of a lot further than we were when the Iraq war kicked off.