Exactly this. Even in interviews costars and others have already told stories of her behaviour, but no one listened, no one cared.They’re talking now because someone’s listening. She has clearly behaved horribly over the years and there are lots of stories to tell. If she hadn’t done this stuff, it wouldn’t be possible for them to come forward.
She's really a nasty piece of work, as adult she'd even make kid actors cry (was it Abigail Breslin telling how Lea made her cry when she was 12?).
She's been a nasty bytch for ever and she's getting what she deserves (ie people telling the truth and being avoided).