The problem with that reading Badger, is that Odin is a shitty dad who creates most of these problems by being a shitty dad. He pits his sons against each other pointlessly which is toxic and breeds resentment. He refuses to effectively mediate the two and just lets their problems spiral until they become world-threatening. He is completely uninvolved with them nor really offers them any meaningful guidance. And he saddles them with all of his mistakes, including the results of his wars against the other realms. And the way Hela tells it, they were wars he might have instigated, and certainly relished in partaking in. Hela was "way too into just killing people" but she was so because that's how Odin raised her and encouraged her, as she fought by his side as his right-hand. And then she gets imprisoned indefinitely for being too much of what daddy wanted her to be. It's actually a really fucked situation. It's very reminiscent of the situation with Fenrir in actual Norse mythology, where Fenrir was an innocent but abused by Odin and shaped into the monster of his downfall.
She shows up and starts killing people, but it's only people who question her claim to power, and from her perspective she feels justified in doing so, as these are the people who imprisoned her for multiple millennia. And again, instead of really giving diplomacy an honest shot (we don't see nearly enough out of her to gauge whether or not she's irredeemable or impossible to negotiate with) the fighting just breaks loose. And yes, she draws her power from Asgard. But they were able to subdue her in the past despite that being the case. And they don't even attempt to separate her from Asgard by other means to lower her power, they just jump to the conclusion without any evidence that she'll become invincible if allowed to power up enough (where does this assertion come from?) and that the only possible solution to separate her from her power is to just blow everything up. It's a dumb, fun movie, that clearly doesn't want to think too hard about any of this, and moves things along fast enough that the audience isn't given time to think about this either. But it's a pretty messed up situation. I'm not saying she was right or was a good person in the film, but the film plants plenty of seeds of doubt but then never actually explores/capitalizes on those things. Especially when Thor is willing to lend Loki the benefit of the doubt for reform time and time and time again, despite his markedly worse transgressions, and a verifiable history of constant betrayals.