it's the exact same train of thought, and they both come from the same place. the idea that trans women are obligated to tell their partners of their status (implication being that if they do not, they open themselves up for violence, and that they will have brought about that violence due to a lack of being "honest") is very similar to the idea that women are responsible for protecting themselves against sexual violence (with the unspoken suggestion that "irresponsibly" failing to follow these "rules" is a way of "asking for it"). they're both symptoms of the same mindset and if they're repeatedly coming up in these discussions, i don't think it's fair to say that survivors and allies of survivors can't defend themselves against the implicit accusations that come tied into those statements.
i am sensitive to the idea that this thread now doesn't have a cw for extended discussion about sexual violence, but i don't feel right or safe about the idea of dropping the conversation because, like sarah said, i think there's a need to contradict victim-blaming. if it would help, i think it wouldn't be a bad idea to split off the topic into one that does carry the proper warnings.