I haven't read enough into the story to make up an opinion. However, purely based on what you're saying, that's completely normal abuser behaviour. You wouldn't be denying the inheritance to enrich yourself, but rather to prevent someone from becoming economically empowered and reducing your power over them. It's a very common tactic.
I don't know much about her but just the fact she does OnlyFans is enough to cut you out of most families. The type of person who actually goes through with that would either be in big financial need or a general life philosophy most people in society disagree with
I could imagine that if they think she's behaving erratically, and would spend the money on falling apart even more, then they don't think it's right to give it to her.
For example if they know she has a drug problem and would put herself in an early grave if she received millions of dollars (just theorizing, I don't know anything about their situation).
> why would sam altman and the rest of their family deny annie altman's inheritance? [...] either this annie character is making stuff up, or the whole rest of her family are some kind of comic book villains
She's done something to alienate herself from the family. Usual reason is drugs, but given that she's publicly braying about being molested I'd bet that she's told similar stories about other family members, internally, prior to this. (ed: she also made the same allegations against her other brother too. Damn I'm good.)
Look at the number of people ascribing manipulative behavior to Sammy. This sort of thing runs in families.
Or look at the verbiage of the allegation itself:
> I’m not four years old with a 13 year old “brother” climbing into my bed non-consensually anymore. (You’re welcome for helping you figure out your sexuality.) I’ve finally accepted that you’ve always been and always will be more scared of me than I’ve been of you.
Nowhere in there does she actually say he did anything more than get in bed with her. She just implies it, and our minds are filling in the rest, giving her plausible deniability against making such a claim. It's fuckary.
> "Annie had (and still was having?) extremely intense, nearly all-day PTSD flashbacks of the sexual assault she experienced in her childhood from Sam Altman, plus other forms of assault from all members of her nuclear family (except her Dad, I think.)"
Everyone wants a piece of Little Annie Altman, it seems. Histrionic personality disorder (and PTSD!) is treated with...Zoloft, dispensing of which was also considered "abuse" in her claims.
> Our Dad’s ashes being turned into diamonds (not his wishes) and that being offered to me instead of money for rent and groceries and physical therapy says more about me?
lol. The Altmans know how to push the buttons of someone with a spending problem.
either this annie character is making stuff up, or the whole rest of her family are some kind of comic book villains