Clan Wolverine is certainly not the most hated faction since the Usurper. There may be a couple Clans that have traditions in place about this, but the core issue is still mostly opaque if your not following their storyline.
I just don't think there are very many people in the Inner Sphere that bang their thumb with a hammer somewhere in the deeps of a major faction and curse "those damned Wolverines" the way that the hardcore Clan Wolverine dramatists might like to imagine.
Frankly, at face value, Clan Wolverine appear to be professional victims of Battletech, but that might be a somewhat unfair characterization from the Dev chairs. There's just this perpetually unresolved set of issues about their historical role that regularly drifts into AU territory.
Maybe this is just one of those larger themes of the BTU that I'm not seeing clearly through the fog. It's not a terrible thing, for instance, for the otherwise sensible seeming Ghost Bears, for instance, to carry an unreasonable Straw Man, like Clan Wolverine, into the Dark Age and beyond.